diff --git a/weed/server/filer_grpc_server_condition.go b/weed/server/filer_grpc_server_condition.go
index f51b0dcef..dfb803932 100644
--- a/weed/server/filer_grpc_server_condition.go
+++ b/weed/server/filer_grpc_server_condition.go
@@ -87,10 +87,14 @@ func clauseSatisfied(c *filer_pb.WriteCondition_Clause, current *filer.Entry) bo
 		if !exists || c.ExpectedEntry == nil {
 			return !exists && c.ExpectedEntry == nil
 		}
-		// Normalize the expected entry the way FindEntry normalizes the stored
-		// one (e.g. FileSize grows to the chunk extent), or an unchanged entry
-		// can compare unequal.
-		return proto.Equal(current.ToProtoEntry(), filer.FromPbEntry("", c.ExpectedEntry).ToProtoEntry())
+		// Compare both sides in serialized form on clones: chunks are matched
+		// by their fid only — the stored entry may carry the restored file_id
+		// while an expected one built from a metadata event does not.
+		expected := proto.Clone(c.ExpectedEntry).(*filer_pb.Entry)
+		filer_pb.BeforeEntrySerialization(expected.Chunks)
+		actual := proto.Clone(current.ToProtoEntry()).(*filer_pb.Entry)
+		filer_pb.BeforeEntrySerialization(actual.Chunks)
+		return proto.Equal(actual, filer.FromPbEntry("", expected).ToProtoEntry())
 	default:
 		// An unrecognized clause kind (e.g. from a newer client) must not be
 		// treated as satisfied, which would silently bypass the guard. Fail
diff --git a/weed/server/filer_grpc_server_condition_test.go b/weed/server/filer_grpc_server_condition_test.go
index 2946e9614..89086a564 100644
--- a/weed/server/filer_grpc_server_condition_test.go
+++ b/weed/server/filer_grpc_server_condition_test.go
@@ -12,6 +12,7 @@ import (
 	"github.com/seaweedfs/seaweedfs/weed/util"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/proto"
 )
 
 func entryWithETag(etag string, mtime time.Time) *filer.Entry {
@@ -221,6 +222,30 @@ func TestIfEntryEqualNormalizesExpected(t *testing.T) {
 	}
 }
 
+// A stamp built from the metadata-log event carries chunks in serialized
+// form (file_id moved into fid), while the stored entry came through
+// FindEntry which restores file_id. The comparison must still match.
+func TestIfEntryEqualSerializedExpected(t *testing.T) {
+	serialized := &filer_pb.Entry{
+		Name:       "f",
+		Attributes: &filer_pb.FuseAttributes{Mtime: 42},
+		Chunks: []*filer_pb.FileChunk{
+			{Fid: &filer_pb.FileId{VolumeId: 3, FileKey: 1, Cookie: 2}, Size: 100},
+		},
+	}
+	storedProto := proto.Clone(serialized).(*filer_pb.Entry)
+	filer_pb.AfterEntryDeserialization(storedProto.Chunks)
+	stored := filer.FromPbEntry("/d", storedProto)
+
+	cond := one(&filer_pb.WriteCondition_Clause{
+		Kind:          filer_pb.WriteCondition_IF_ENTRY_EQUAL,
+		ExpectedEntry: serialized,
+	})
+	if !writeConditionSatisfied(cond, stored) {
+		t.Error("serialized expected entry must equal the deserialized stored entry")
+	}
+}
+
 // storedEntryETag prefers the stored Seaweed ETag attribute and falls back to
 // the Md5-derived ETag, matching the S3 gateway.
 func TestStoredEntryETag(t *testing.T) {