diff --git a/polly/include/polly/ScopPass.h b/polly/include/polly/ScopPass.h
index edaadf2cd503f5..360768f5ea59db 100644
--- a/polly/include/polly/ScopPass.h
+++ b/polly/include/polly/ScopPass.h
@@ -21,6 +21,7 @@
 #include "llvm/ADT/PriorityWorklist.h"
 #include "llvm/Analysis/RegionPass.h"
 #include "llvm/IR/PassManager.h"
+#include "llvm/IR/PassManagerImpl.h"
 
 using namespace llvm;