diff --git a/check-qdict.c b/check-qdict.c
index 6afce5a5ca..ecc7fd7b90 100644
--- a/check-qdict.c
+++ b/check-qdict.c
@@ -267,8 +267,9 @@ static QString *read_line(FILE *file, char *key)
 {
     char value[128];
 
-    if (fscanf(file, "%s%s", key, value) == EOF)
+    if (fscanf(file, "%127s%127s", key, value) == EOF) {
         return NULL;
+    }
     remove_dots(key);
     return qstring_from_str(value);
 }