diff --git a/include/llvm/Transforms/Scalar/AnnotationRemarks.h b/include/llvm/Transforms/Scalar/AnnotationRemarks.h
index dd762943414..d76b55babc7 100644
--- a/include/llvm/Transforms/Scalar/AnnotationRemarks.h
+++ b/include/llvm/Transforms/Scalar/AnnotationRemarks.h
@@ -14,10 +14,12 @@
 #ifndef LLVM_TRANSFORMS_SCALAR_ANNOTATIONREMARKS_H
 #define LLVM_TRANSFORMS_SCALAR_ANNOTATIONREMARKS_H
 
-#include "llvm/IR/Function.h"
 #include "llvm/IR/PassManager.h"
 
 namespace llvm {
+
+class Function;
+
 struct AnnotationRemarksPass : public PassInfoMixin<AnnotationRemarksPass> {
   PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
 };