1 files changed, 3 insertions, 3 deletions
diff --git a/pp.c b/pp.c
index b6275ddd47..87d10f7fe3 100644
--- a/pp.c
+++ b/pp.c
@@ -2254,7 +2254,7 @@ PP(pp_ucfirst)
 
     if (DO_UTF8(sv) && (s = (U8*)SvPV(sv, slen)) && slen && (*s & 0xc0) == 0xc0) {
 	I32 ulen;
-	U8 tmpbuf[10];
+	U8 tmpbuf[UTF8_MAXLEN];
 	U8 *tend;
 	UV uv = utf8_to_uv(s, &ulen);
 
@@ -2313,7 +2313,7 @@ PP(pp_lcfirst)
 
     if (DO_UTF8(sv) && (s = (U8*)SvPV(sv, slen)) && slen && (*s & 0xc0) == 0xc0) {
 	I32 ulen;
-	U8 tmpbuf[10];
+	U8 tmpbuf[UTF8_MAXLEN];
 	U8 *tend;
 	UV uv = utf8_to_uv(s, &ulen);
 
@@ -4645,7 +4645,7 @@ PP(pp_pack)
 	    while (len-- > 0) {
 		fromstr = NEXTFROM;
 		auint = SvUV(fromstr);
-		SvGROW(cat, SvCUR(cat) + 10);
+		SvGROW(cat, SvCUR(cat) + UTF8_MAXLEN);
 		SvCUR_set(cat, (char*)uv_to_utf8((U8*)SvEND(cat),auint)
 			       - SvPVX(cat));
 	    }