diff --git a/dlls/uiautomationcore/uia_client.c b/dlls/uiautomationcore/uia_client.c
index df9b2b283e0..8d1e3c8c7dc 100644
--- a/dlls/uiautomationcore/uia_client.c
+++ b/dlls/uiautomationcore/uia_client.c
@@ -1542,7 +1542,7 @@ static HRESULT uia_provider_get_special_prop_val(struct uia_provider *prov,
     case UIA_RuntimeIdPropertyId:
     {
         IRawElementProviderFragment *elfrag;
-        SAFEARRAY *sa;
+        SAFEARRAY *sa = NULL;
         LONG lbound;
         int val;