diff --git a/query_classifier/test/compare.cc b/query_classifier/test/compare.cc
index c6ec919d7..32ca53b4c 100644
--- a/query_classifier/test/compare.cc
+++ b/query_classifier/test/compare.cc
@@ -154,7 +154,7 @@ QUERY_CLASSIFIER* load_classifier(const char* name)
 {
     bool loaded = false;
     size_t len = strlen(name);
-    char libdir[len + 1];
+    char libdir[len + 3 + 1]; // Extra for ../
 
     sprintf(libdir, "../%s", name);