diff --git a/compiler/cpp/src/parse/t_type.h b/compiler/cpp/src/parse/t_type.h
index bf8d7fa..a10e31f 100644
--- a/compiler/cpp/src/parse/t_type.h
+++ b/compiler/cpp/src/parse/t_type.h
@@ -116,7 +116,9 @@
 
 
  protected:
-  t_type() {
+  t_type() :
+    program_(NULL)
+  {
     memset(fingerprint_, 0, sizeof(fingerprint_));
   }
 
@@ -134,6 +136,7 @@
   }
 
   t_type(std::string name) :
+    program_(NULL),
     name_(name)
   {
     memset(fingerprint_, 0, sizeof(fingerprint_));