diff --git a/python/cmappy.h b/python/cmappy.h
index 082b3241..9ae28538 100644
--- a/python/cmappy.h
+++ b/python/cmappy.h
@@ -123,7 +123,7 @@ static char *mappy_fetch_seq(const mm_idx_t *mi, const char *name, int st, int e
 	if (en < 0 || en > mi->seq[rid].len)
 		en = mi->seq[rid].len;
 	s = (char*)malloc(en - st + 1);
-	*len = mm_idx_getseq(mi, rid, st, en, s);
+	*len = mm_idx_getseq(mi, rid, st, en, (uint8_t*)s);
 	for (i = 0; i < *len; ++i)
 		s[i] = "ACGTN"[(uint8_t)s[i]];
 	s[*len] = 0;
diff --git a/python/cmappy.pxd b/python/cmappy.pxd
index 37353074..adef28fd 100644
--- a/python/cmappy.pxd
+++ b/python/cmappy.pxd
@@ -59,7 +59,8 @@ cdef extern from "minimap.h":
 		mm_idx_seq_t *seq
 		uint32_t *S
 		mm_idx_bucket_t *B
-		void *km, *h
+		void *km
+		void *h
 
 	ctypedef struct mm_idx_reader_t:
 		pass