diff --git a/llvm/include/llvm/MC/MCWinCOFFObjectWriter.h b/llvm/include/llvm/MC/MCWinCOFFObjectWriter.h
index 6e14cefaa0ab..198a08b5f539 100644
--- a/llvm/include/llvm/MC/MCWinCOFFObjectWriter.h
+++ b/llvm/include/llvm/MC/MCWinCOFFObjectWriter.h
@@ -13,6 +13,7 @@
 namespace llvm {
 
 class MCAsmBackend;
+class MCContext;
 class MCFixup;
 class MCObjectWriter;
 class MCValue;