diff --git a/include/llvm-c/Core.h b/include/llvm-c/Core.h
index 7cb5bc371b7..c741d1c19a3 100644
--- a/include/llvm-c/Core.h
+++ b/include/llvm-c/Core.h
@@ -870,7 +870,7 @@ LLVMValueRef LLVMBuildTruncOrBitCast(LLVMBuilderRef, LLVMValueRef Val,
                                      LLVMTypeRef DestTy, const char *Name);
 LLVMValueRef LLVMBuildPointerCast(LLVMBuilderRef, LLVMValueRef Val,
                                   LLVMTypeRef DestTy, const char *Name);
-LLVMValueRef LLVMBuildIntCast(LLVMBuilderRef, LLVMValueRef Val,
+LLVMValueRef LLVMBuildIntCast(LLVMBuilderRef, LLVMValueRef Val, /*Signed cast!*/
                               LLVMTypeRef DestTy, const char *Name);
 LLVMValueRef LLVMBuildFPCast(LLVMBuilderRef, LLVMValueRef Val,
                              LLVMTypeRef DestTy, const char *Name);
diff --git a/lib/VMCore/Core.cpp b/lib/VMCore/Core.cpp
index 78cd4dcafc6..449e9671ab7 100644
--- a/lib/VMCore/Core.cpp
+++ b/lib/VMCore/Core.cpp
@@ -1860,9 +1860,9 @@ LLVMValueRef LLVMBuildPointerCast(LLVMBuilderRef B, LLVMValueRef Val,
 }
 
 LLVMValueRef LLVMBuildIntCast(LLVMBuilderRef B, LLVMValueRef Val,
-                              LLVMTypeRef DestTy, int isSigned,
-                              const char *Name) {
-  return wrap(unwrap(B)->CreateIntCast(unwrap(Val), unwrap(DestTy), isSigned, Name));
+                              LLVMTypeRef DestTy, const char *Name) {
+  return wrap(unwrap(B)->CreateIntCast(unwrap(Val), unwrap(DestTy),
+                                       /*isSigned*/true, Name));
 }
 
 LLVMValueRef LLVMBuildFPCast(LLVMBuilderRef B, LLVMValueRef Val,