1 files changed, 1 insertions, 1 deletions
diff --git a/valexpr.h b/valexpr.h
index 45f44b2e..c5796b88 100644
--- a/valexpr.h
+++ b/valexpr.h
@@ -794,7 +794,7 @@ public:
   }
 
   operator bool() const throw() {
-    return ptr != NULL;
+    return ptr.get() != NULL;
   }
   operator string() const throw() {
     return expr_str;