diff --git a/src/tag.c b/src/tag.c
index 08abd4175..4f2426b90 100644
--- a/src/tag.c
+++ b/src/tag.c
@@ -1443,6 +1443,8 @@ find_tags(pat, num_matches, matchesp, flags, mincount, buf_ffname)
 	orgpat.len = p_tl;
 
     prepare_pats(&orgpat, has_re);
+    if (has_re && orgpat.regmatch.regprog == NULL)
+	goto findtag_end;
 
 #ifdef FEAT_TAG_BINS
     /* This is only to avoid a compiler warning for using search_info
diff --git a/src/version.c b/src/version.c
index 4b4890c7e..a2ca2386e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -719,6 +719,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    650,
 /**/
     649,
 /**/