diff --git a/src/pcresearch.c b/src/pcresearch.c
index ad5999d..ce55ab3 100644
--- a/src/pcresearch.c
+++ b/src/pcresearch.c
@@ -176,6 +176,9 @@ Pexecute (char const *buf, size_t size, size_t *match_size,
       switch (e)
         {
         case PCRE_ERROR_NOMATCH:
+#ifdef HAVE_LANGINFO_CODESET
+        case PCRE_ERROR_BADUTF8:
+#endif
           return -1;
 
         case PCRE_ERROR_NOMEMORY: