diff --git a/reactos/win32ss/user/user32/windows/class.c b/reactos/win32ss/user/user32/windows/class.c
index be442b96b6b..caa5931d573 100644
--- a/reactos/win32ss/user/user32/windows/class.c
+++ b/reactos/win32ss/user/user32/windows/class.c
@@ -204,6 +204,8 @@ VersionRegisterClass(
     WCHAR ClassNameBuf[MAX_PATH] = {0};
     RTL_CALLER_ALLOCATED_ACTIVATION_CONTEXT_STACK_FRAME_EXTENDED Frame = { sizeof(Frame), 1 };
 
+    ERR("VersionRegisterClass: Attempting to call RegisterClassNameW in %S\n.", lpLibFileName);
+
     RtlActivateActivationContextUnsafeFast(&Frame, Contex);
 
     _SEH2_TRY