diff --git a/dlls/secur32/lsa.c b/dlls/secur32/lsa.c
index 35df4ce5650..3a99135a5e0 100644
--- a/dlls/secur32/lsa.c
+++ b/dlls/secur32/lsa.c
@@ -113,9 +113,10 @@ NTSTATUS WINAPI LsaEnumerateLogonSessions(PULONG LogonSessionCount,
     return STATUS_SUCCESS;
 }
 
-NTSTATUS WINAPI LsaFreeReturnBuffer(PVOID Buffer)
+NTSTATUS WINAPI LsaFreeReturnBuffer(PVOID buffer)
 {
-    FIXME("%p stub\n", Buffer);
+    TRACE("%p\n", buffer);
+    HeapFree(GetProcessHeap(), 0, buffer);
     return STATUS_SUCCESS;
 }