diff --git a/lldb/include/lldb/Expression/ExpressionVariable.h b/lldb/include/lldb/Expression/ExpressionVariable.h
index 439fc6d0c0c2..d8030ba1c257 100644
--- a/lldb/include/lldb/Expression/ExpressionVariable.h
+++ b/lldb/include/lldb/Expression/ExpressionVariable.h
@@ -43,6 +43,7 @@ public:
     LLVMCastKind getKind() const { return m_kind; }
     
     ExpressionVariable(LLVMCastKind kind) :
+        m_flags(0),
         m_kind(kind)
     {
     }