diff --git a/keywordset.c b/keywordset.c
index 1ce14df3..e9d6da95 100644
--- a/keywordset.c
+++ b/keywordset.c
@@ -15,7 +15,7 @@ struct keywordset {
 
 static int find_name(struct keywordset *kws, char *name, size_t len) {
     int i;
-    int j;
+    size_t j;
     for ( i = 0; i < kws->used ; i++ ) {
         j = 0;
         while(1) {