diff --git a/FmpDevicePkg/FmpDxe/VariableSupport.c b/FmpDevicePkg/FmpDxe/VariableSupport.c
index 541e5e0f5f..5126c5e2d5 100644
--- a/FmpDevicePkg/FmpDxe/VariableSupport.c
+++ b/FmpDevicePkg/FmpDxe/VariableSupport.c
@@ -832,7 +832,7 @@ LockAllFmpVariables (
   // Locate the VariablePolicy protocol.
   Status = gBS->LocateProtocol (&gEdkiiVariablePolicyProtocolGuid, NULL, (VOID **)&VariablePolicy);
   if (EFI_ERROR (Status)) {
-    DEBUG ((DEBUG_ERROR, "FmpDxe %a - Could not locate VariablePolicy protocol! %r\n", __FUNCTION__, Status));
+    DEBUG ((DEBUG_ERROR, "FmpDxe %a - Could not locate VariablePolicy protocol! %r\n", __func__, Status));
     return Status;
   }