diff --git a/include/llvm/InlineAsm.h b/include/llvm/InlineAsm.h
index a35825d44a9..f80ddc0b131 100644
--- a/include/llvm/InlineAsm.h
+++ b/include/llvm/InlineAsm.h
@@ -19,7 +19,7 @@
 
 namespace llvm {
 
-class AssemblyAnnotationWriter;
+struct AssemblyAnnotationWriter;
 class PointerType;
 class FunctionType;
 class Module;