diff --git a/dlls/avrt/avrt.spec b/dlls/avrt/avrt.spec
index 640a12ac22c..a7dfc42879c 100644
--- a/dlls/avrt/avrt.spec
+++ b/dlls/avrt/avrt.spec
@@ -1,4 +1,4 @@
-@ stub AvQuerySystemResponsiveness
+@ stdcall AvQuerySystemResponsiveness(long ptr)
 @ stdcall AvRevertMmThreadCharacteristics(long)
 @ stub AvRtCreateThreadOrderingGroup
 @ stub AvRtCreateThreadOrderingGroupExA
diff --git a/dlls/avrt/main.c b/dlls/avrt/main.c
index 8a110250aea..7ef28249728 100644
--- a/dlls/avrt/main.c
+++ b/dlls/avrt/main.c
@@ -83,6 +83,12 @@ HANDLE WINAPI AvSetMmThreadCharacteristicsW(LPCWSTR TaskName, LPDWORD TaskIndex)
     return (HANDLE)0x12345678;
 }
 
+BOOL WINAPI AvQuerySystemResponsiveness(HANDLE AvrtHandle, ULONG *value)
+{
+    FIXME("(%p, %p): stub\n", AvrtHandle, value);
+    return FALSE;
+}
+
 BOOL WINAPI AvRevertMmThreadCharacteristics(HANDLE AvrtHandle)
 {
     FIXME("(%p): stub\n", AvrtHandle);