diff --git a/src/cursor.h b/src/cursor.h
index cd5cd31..f1a5287 100644
--- a/src/cursor.h
+++ b/src/cursor.h
@@ -475,7 +475,7 @@ static inline int pull_bytes(struct cursor *cur, int count, const unsigned char
 }
 
 static inline int parse_str(struct cursor *cur, const char *str) {
-    int i;
+    unsigned int i;
     char c, cs;
     unsigned long len;