diff --git a/llvm/include/llvm/IR/Instructions.h b/llvm/include/llvm/IR/Instructions.h
index 1f2ca301d24c..ddb441b6e5d4 100644
--- a/llvm/include/llvm/IR/Instructions.h
+++ b/llvm/include/llvm/IR/Instructions.h
@@ -1337,8 +1337,9 @@ public:
 
   ~CallInst() override;
 
-  Type *getFunctionType() const {
-    return cast<PointerType>(getCalledValue()->getType())->getElementType();
+  FunctionType *getFunctionType() const {
+    return cast<FunctionType>(
+        cast<PointerType>(getCalledValue()->getType())->getElementType());
   }
 
   // Note that 'musttail' implies 'tail'.