diff --git a/libpgcommon/lwgeom_pg.c b/libpgcommon/lwgeom_pg.c
index 5983af0e7f7..b989c3d3c5f 100644
--- a/libpgcommon/lwgeom_pg.c
+++ b/libpgcommon/lwgeom_pg.c
@@ -162,6 +162,17 @@ pg_error(const char *fmt, va_list ap)
 	ereport(ERROR, (errmsg_internal("%s", errmsg)));
 }
 
+static void
+pg_warning(const char *fmt, va_list ap)
+{
+	char errmsg[PGC_ERRMSG_MAXLEN+1];
+
+	vsnprintf (errmsg, PGC_ERRMSG_MAXLEN, fmt, ap);
+
+	errmsg[PGC_ERRMSG_MAXLEN]='\0';
+	ereport(WARNING, (errmsg_internal("%s", errmsg)));
+}
+
 static void
 pg_notice(const char *fmt, va_list ap)
 {
@@ -245,6 +256,18 @@ lwpgnotice(const char *fmt, ...)
 	va_end(ap);
 }
 
+void
+lwpgwarning(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+
+  pg_warning(fmt, ap);
+
+	va_end(ap);
+}
+
 void
 lwpgerror(const char *fmt, ...)
 {
diff --git a/libpgcommon/lwgeom_pg.h b/libpgcommon/lwgeom_pg.h
index 789e2deb3f0..d5a4d173ef0 100644
--- a/libpgcommon/lwgeom_pg.h
+++ b/libpgcommon/lwgeom_pg.h
@@ -172,5 +172,6 @@ Datum LWGEOM_dropBBOX(PG_FUNCTION_ARGS);
 
 void lwpgerror(const char *fmt, ...);
 void lwpgnotice(const char *fmt, ...);
+void lwpgwarning(const char *fmt, ...);
 
 #endif /* !defined _LWGEOM_PG_H */