diff --git a/libpgcommon/lwgeom_pg.c b/libpgcommon/lwgeom_pg.c
index 02c37b61a5f..115f19e7ca6 100644
--- a/libpgcommon/lwgeom_pg.c
+++ b/libpgcommon/lwgeom_pg.c
@@ -209,24 +209,6 @@ pglwgeom_get_zm(const GSERIALIZED *lwgeom)
 	return 2 * FLAGS_GET_Z(lwgeom->flags) + FLAGS_GET_M(lwgeom->flags);
 }
 
-bool
-pglwgeom_has_bbox(const GSERIALIZED *lwgeom)
-{
-	return FLAGS_GET_BBOX(lwgeom->flags);
-}
-
-bool
-pglwgeom_has_z(const GSERIALIZED *lwgeom)
-{
-	return FLAGS_GET_Z(lwgeom->flags);
-}
-
-bool
-pglwgeom_has_m(const GSERIALIZED *lwgeom)
-{
-	return FLAGS_GET_M(lwgeom->flags);
-}
-
 GSERIALIZED* pglwgeom_drop_bbox(GSERIALIZED *geom)
 {
 	return gserialized_drop_gidx(geom);
diff --git a/libpgcommon/lwgeom_pg.h b/libpgcommon/lwgeom_pg.h
index 55723e93683..b0847d66ebf 100644
--- a/libpgcommon/lwgeom_pg.h
+++ b/libpgcommon/lwgeom_pg.h
@@ -101,9 +101,6 @@ extern int pglwgeom_get_zm(const GSERIALIZED *lwgeom);
 extern GSERIALIZED* pglwgeom_drop_bbox(GSERIALIZED *geom);
 extern size_t pglwgeom_size(const GSERIALIZED *geom);
 extern int pglwgeom_ndims(const GSERIALIZED *geom);
-extern bool pglwgeom_has_bbox(const GSERIALIZED *lwgeom);
-extern bool pglwgeom_has_z(const GSERIALIZED *lwgeom);
-extern bool pglwgeom_has_m(const GSERIALIZED *lwgeom);
 extern int pglwgeom_is_empty(const GSERIALIZED *geom);
 /*
  * Get the 2d bounding box of the given geometry, in FLOAT4 format.
diff --git a/postgis/lwgeom_functions_basic.c b/postgis/lwgeom_functions_basic.c
index bfc4763a1e0..6b0fb384f96 100644
--- a/postgis/lwgeom_functions_basic.c
+++ b/postgis/lwgeom_functions_basic.c
@@ -357,7 +357,7 @@ Datum LWGEOM_force_3dz(PG_FUNCTION_ARGS)
 	LWGEOM *lwg_in, *lwg_out;
 
 	/* already 3d */
-	if ( pglwgeom_ndims(pg_geom_in) == 3 && pglwgeom_has_z(pg_geom_in) ) 
+	if ( pglwgeom_ndims(pg_geom_in) == 3 && gserialized_has_z(pg_geom_in) ) 
 		PG_RETURN_POINTER(pg_geom_in);
 
 	lwg_in = lwgeom_from_gserialized(pg_geom_in);
@@ -379,7 +379,7 @@ Datum LWGEOM_force_3dm(PG_FUNCTION_ARGS)
 	LWGEOM *lwg_in, *lwg_out;
 
 	/* already 3d */
-	if ( pglwgeom_ndims(pg_geom_in) == 3 && pglwgeom_has_m(pg_geom_in) ) 
+	if ( pglwgeom_ndims(pg_geom_in) == 3 && gserialized_has_m(pg_geom_in) ) 
 		PG_RETURN_POINTER(pg_geom_in);
 
 	lwg_in = lwgeom_from_gserialized(pg_geom_in);
@@ -433,7 +433,7 @@ Datum LWGEOM_force_collection(PG_FUNCTION_ARGS)
 	 * automatic bbox addition FOR_COMPLEX_GEOMS.
 	 */
 	if ( gserialized_get_type(geom) == COLLECTIONTYPE &&
-	        pglwgeom_has_bbox(geom) )
+	        gserialized_has_bbox(geom) )
 	{
 		PG_RETURN_POINTER(geom);
 	}
@@ -485,7 +485,7 @@ Datum LWGEOM_force_multi(PG_FUNCTION_ARGS)
 	** automatic bbox addition FOR_COMPLEX_GEOMS.
 	*/
 	if ( lwtype_is_collection(gserialized_get_type(geom)) && 
-	     pglwgeom_has_bbox(geom) )
+	     gserialized_has_bbox(geom) )
 	{
 		PG_RETURN_POINTER(geom);
 	}
@@ -1906,8 +1906,8 @@ Datum LWGEOM_zmflag(PG_FUNCTION_ARGS)
 	int ret = 0;
 
 	in = (GSERIALIZED *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
-	if ( pglwgeom_has_z(in) ) ret += 2;
-	if ( pglwgeom_has_m(in) ) ret += 1;
+	if ( gserialized_has_z(in) ) ret += 2;
+	if ( gserialized_has_m(in) ) ret += 1;
 	PG_FREE_IF_COPY(in, 0);
 	PG_RETURN_INT16(ret);
 }
@@ -1916,14 +1916,14 @@ PG_FUNCTION_INFO_V1(LWGEOM_hasz);
 Datum LWGEOM_hasz(PG_FUNCTION_ARGS)
 {
 	GSERIALIZED *in = (GSERIALIZED *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
-	PG_RETURN_BOOL(pglwgeom_has_z(in));
+	PG_RETURN_BOOL(gserialized_has_z(in));
 }
 
 PG_FUNCTION_INFO_V1(LWGEOM_hasm);
 Datum LWGEOM_hasm(PG_FUNCTION_ARGS)
 {
 	GSERIALIZED *in = (GSERIALIZED *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
-	PG_RETURN_BOOL(pglwgeom_has_m(in));
+	PG_RETURN_BOOL(gserialized_has_m(in));
 }
 
 
@@ -1931,7 +1931,7 @@ PG_FUNCTION_INFO_V1(LWGEOM_hasBBOX);
 Datum LWGEOM_hasBBOX(PG_FUNCTION_ARGS)
 {
 	GSERIALIZED *in = (GSERIALIZED *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
-	char res = pglwgeom_has_bbox(in);
+	char res = gserialized_has_bbox(in);
 	PG_FREE_IF_COPY(in, 0);
 	PG_RETURN_BOOL(res);
 }
diff --git a/postgis/lwgeom_functions_lrs.c b/postgis/lwgeom_functions_lrs.c
index 6e41b821c39..a240b734ac2 100644
--- a/postgis/lwgeom_functions_lrs.c
+++ b/postgis/lwgeom_functions_lrs.c
@@ -468,8 +468,8 @@ Datum LWGEOM_locate_between_m(PG_FUNCTION_ARGS)
 	double start_measure = PG_GETARG_FLOAT8(1);
 	double end_measure = PG_GETARG_FLOAT8(2);
 	LWGEOM *lwin, *lwout;
-	int hasz = pglwgeom_has_z(gin);
-	int hasm = pglwgeom_has_m(gin);
+	int hasz = gserialized_has_z(gin);
+	int hasm = gserialized_has_m(gin);
 	int type;
 
 	if ( end_measure < start_measure )
diff --git a/postgis/lwgeom_geos.c b/postgis/lwgeom_geos.c
index 5e1c4ccc202..c5d2316b9fe 100644
--- a/postgis/lwgeom_geos.c
+++ b/postgis/lwgeom_geos.c
@@ -314,7 +314,7 @@ Datum pgis_union_geometry_array(PG_FUNCTION_ARGS)
 			{
 				srid = gserialized_get_srid(pggeom);
 				gotsrid = 1;
-				if ( pglwgeom_has_z(pggeom) ) is3d = 1;
+				if ( gserialized_has_z(pggeom) ) is3d = 1;
 			}
 			else
 			{
@@ -474,7 +474,7 @@ Datum pgis_union_geometry_array(PG_FUNCTION_ARGS)
 				POSTGIS_DEBUGF(3, "geom %d @ %p", i, geom);
 
 				/* Check is3d flag */
-				if ( pglwgeom_has_z(geom) ) is3d = 1;
+				if ( gserialized_has_z(geom) ) is3d = 1;
 
 				/* Check SRID homogeneity and initialize geos result */
 				if ( ! geos_result )
@@ -586,7 +586,7 @@ Datum ST_UnaryUnion(PG_FUNCTION_ARGS)
 	if ( pglwgeom_is_empty(geom1) )
 		PG_RETURN_POINTER(geom1);
 
-	is3d = ( pglwgeom_has_z(geom1) );
+	is3d = ( gserialized_has_z(geom1) );
 
 	srid = gserialized_get_srid(geom1);
 
@@ -744,7 +744,7 @@ Datum boundary(PG_FUNCTION_ARGS)
 
 	GEOSSetSRID(g3, srid);
 
-	result = GEOS2POSTGIS(g3, pglwgeom_has_z(geom1));
+	result = GEOS2POSTGIS(g3, gserialized_has_z(geom1));
 
 	if (result == NULL)
 	{
@@ -805,7 +805,7 @@ Datum convexhull(PG_FUNCTION_ARGS)
 
 	GEOSSetSRID(g3, srid);
 
-	lwout = GEOS2LWGEOM(g3, pglwgeom_has_z(geom1));
+	lwout = GEOS2LWGEOM(g3, gserialized_has_z(geom1));
 
 	if (lwout == NULL)
 	{
@@ -879,7 +879,7 @@ Datum topologypreservesimplify(PG_FUNCTION_ARGS)
 
 	GEOSSetSRID(g3, gserialized_get_srid(geom1));
 
-	result = GEOS2POSTGIS(g3, pglwgeom_has_z(geom1));
+	result = GEOS2POSTGIS(g3, gserialized_has_z(geom1));
 
 	if (result == NULL)
 	{
@@ -1086,7 +1086,7 @@ Datum buffer(PG_FUNCTION_ARGS)
 
 	GEOSSetSRID(g3, gserialized_get_srid(geom1));
 
-	result = GEOS2POSTGIS(g3, pglwgeom_has_z(geom1));
+	result = GEOS2POSTGIS(g3, gserialized_has_z(geom1));
 
 	if (result == NULL)
 	{
@@ -1259,7 +1259,7 @@ Datum offsetcurve(PG_FUNCTION_ARGS)
 
 	GEOSSetSRID(g3, gserialized_get_srid(geom1));
 
-	result = GEOS2POSTGIS(g3, pglwgeom_has_z(geom1));
+	result = GEOS2POSTGIS(g3, gserialized_has_z(geom1));
 
 	if (result == NULL)
 	{
@@ -1387,7 +1387,7 @@ Datum pointonsurface(PG_FUNCTION_ARGS)
 
 	GEOSSetSRID(g3, gserialized_get_srid(geom1));
 
-	result = GEOS2POSTGIS(g3, pglwgeom_has_z(geom1));
+	result = GEOS2POSTGIS(g3, gserialized_has_z(geom1));
 
 	if (result == NULL)
 	{
@@ -1438,7 +1438,7 @@ Datum centroid(PG_FUNCTION_ARGS)
 
 	GEOSSetSRID(geosresult, gserialized_get_srid(geom));
 
-	result = GEOS2POSTGIS(geosresult, pglwgeom_has_z(geom));
+	result = GEOS2POSTGIS(geosresult, gserialized_has_z(geom));
 
 	if (result == NULL)
 	{
@@ -3236,7 +3236,7 @@ Datum GEOSnoop(PG_FUNCTION_ARGS)
 	geosgeom = (GEOSGeometry *)POSTGIS2GEOS(geom);
 	if ( ! geosgeom ) PG_RETURN_NULL();
 
-	lwgeom_result = GEOS2POSTGIS(geosgeom, pglwgeom_has_z(geom));
+	lwgeom_result = GEOS2POSTGIS(geosgeom, gserialized_has_z(geom));
 	GEOSGeom_destroy(geosgeom);
 
 
@@ -3369,7 +3369,7 @@ Datum linemerge(PG_FUNCTION_ARGS)
 
 	GEOSSetSRID(g3, gserialized_get_srid(geom1));
 
-	result = GEOS2POSTGIS(g3, pglwgeom_has_z(geom1));
+	result = GEOS2POSTGIS(g3, gserialized_has_z(geom1));
 
 	if (result == NULL)
 	{
diff --git a/postgis/lwgeom_gist.c b/postgis/lwgeom_gist.c
index a5fd1a50fa6..f3fe68b2761 100644
--- a/postgis/lwgeom_gist.c
+++ b/postgis/lwgeom_gist.c
@@ -600,7 +600,7 @@ Datum LWGEOM_gist_consistent(PG_FUNCTION_ARGS)
 	** If not, pull the full toasted data out, and call the standard box
 	** retrieval function, which will calculate the box from scratch.
 	*/
-	if ( pglwgeom_has_bbox(query) )
+	if ( gserialized_has_bbox(query) )
 	{
 		pglwgeom_getbox2d_p(query, &box);
 	}
diff --git a/postgis/lwgeom_inout.c b/postgis/lwgeom_inout.c
index dd5c59ac439..62c202ae547 100644
--- a/postgis/lwgeom_inout.c
+++ b/postgis/lwgeom_inout.c
@@ -401,7 +401,7 @@ Datum LWGEOM_dropBBOX(PG_FUNCTION_ARGS)
 	GSERIALIZED *geom = (GSERIALIZED *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
 
 	/* No box? we're done already! */
-	if ( ! pglwgeom_has_bbox(geom) )
+	if ( ! gserialized_has_bbox(geom) )
 		PG_RETURN_POINTER(geom);
 	
 	PG_RETURN_POINTER(pglwgeom_drop_bbox(geom));
diff --git a/postgis/lwgeom_ogc.c b/postgis/lwgeom_ogc.c
index 0e37f1f7a63..78fea64ea57 100644
--- a/postgis/lwgeom_ogc.c
+++ b/postgis/lwgeom_ogc.c
@@ -152,7 +152,7 @@ Datum LWGEOM_getTYPE(PG_FUNCTION_ARGS)
 	else
 		strcpy(result,"UNKNOWN");
 
-	if ( pglwgeom_has_m(lwgeom) && ! pglwgeom_has_z(lwgeom) )
+	if ( gserialized_has_m(lwgeom) && ! gserialized_has_z(lwgeom) )
 		strcat(result, "M");
 
 	size = strlen(result) + VARHDRSZ ;
@@ -636,7 +636,7 @@ Datum LWGEOM_z_point(PG_FUNCTION_ARGS)
 		PG_RETURN_NULL();
 
 	/* no Z in input */
-	if ( ! pglwgeom_has_z(geom) ) PG_RETURN_NULL();
+	if ( ! gserialized_has_z(geom) ) PG_RETURN_NULL();
 
 	getPoint3dz_p(point->point, 0, &p);
 
@@ -790,7 +790,7 @@ Datum LWGEOM_from_WKB(PG_FUNCTION_ARGS)
 	geom = (GSERIALIZED *)DatumGetPointer(DirectFunctionCall1(
 	                                        LWGEOMFromWKB, PG_GETARG_DATUM(0)));
 
-	if ( gserialized_get_srid(geom) != SRID_UNKNOWN || pglwgeom_has_z(geom) != 0 )
+	if ( gserialized_get_srid(geom) != SRID_UNKNOWN || gserialized_has_z(geom) != 0 )
 	{
 		elog(WARNING, "OGC WKB expected, EWKB provided - use GeometryFromEWKB() for this");
 	}