diff --git a/relaxng.c b/relaxng.c
index b6961fd..c98e04e 100644
--- a/relaxng.c
+++ b/relaxng.c
@@ -7611,7 +7611,7 @@
                                   xmlRegexpPtr regexp, xmlNodePtr content) {
     xmlRegExecCtxtPtr exec;
     xmlNodePtr cur;
-    int ret;
+    int ret = 0;
 
     if ((ctxt == NULL) || (regexp == NULL))
         return(-1);