diff --git a/dlls/uiautomationcore/uia_main.c b/dlls/uiautomationcore/uia_main.c
index 6e6180ee9d2..994d8e6080b 100644
--- a/dlls/uiautomationcore/uia_main.c
+++ b/dlls/uiautomationcore/uia_main.c
@@ -36,3 +36,12 @@ BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, void *lpv)
 
     return TRUE;
 }
+
+/***********************************************************************
+ *          UiaClientsAreListening (uiautomationcore.@)
+ */
+BOOL WINAPI UiaClientsAreListening(void)
+{
+    FIXME("()\n");
+    return FALSE;
+}
diff --git a/dlls/uiautomationcore/uiautomationcore.spec b/dlls/uiautomationcore/uiautomationcore.spec
index 3df7425af1a..3026001b6b7 100644
--- a/dlls/uiautomationcore/uiautomationcore.spec
+++ b/dlls/uiautomationcore/uiautomationcore.spec
@@ -52,7 +52,7 @@
 @ stub TransformPattern_Resize
 @ stub TransformPattern_Rotate
 @ stub UiaAddEvent
-@ stub UiaClientsAreListening
+@ stdcall UiaClientsAreListening()
 @ stub UiaEventAddWindow
 @ stub UiaEventRemoveWindow
 @ stub UiaFind