diff --git a/include/llvm/ExecutionEngine/ExecutionEngine.h b/include/llvm/ExecutionEngine/ExecutionEngine.h
index 0435df9e44e..86e36854db9 100644
--- a/include/llvm/ExecutionEngine/ExecutionEngine.h
+++ b/include/llvm/ExecutionEngine/ExecutionEngine.h
@@ -11,6 +11,7 @@
 #include <vector>
 #include <string>
 #include <map>
+#include <cassert>
 class Constant;
 class Type;
 class GlobalValue;