diff --git a/internal/c/libqb.h b/internal/c/libqb.h
index a9cd39f1f..30bd85362 100644
--- a/internal/c/libqb.h
+++ b/internal/c/libqb.h
@@ -68,4 +68,6 @@
     
     extern qbs *qbs_lcase(qbs *str);
     extern qbs *qbs_ucase(qbs *str);
+
+    using namespace std;
 #endif