diff --git a/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp b/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp
index 000e19c0c0a..b622d018478 100644
--- a/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp
+++ b/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp
@@ -16,6 +16,7 @@
 #include "llvm/Transforms/AggressiveInstCombine/AggressiveInstCombine.h"
 #include "AggressiveInstCombineInternal.h"
 #include "llvm-c/Initialization.h"
+#include "llvm-c/Transforms/Scalar.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/GlobalsModRef.h"