diff --git a/src/archive/zip/struct.go b/src/archive/zip/struct.go
index 63fa0b3b4d..f613ebdc34 100644
--- a/src/archive/zip/struct.go
+++ b/src/archive/zip/struct.go
@@ -228,15 +228,11 @@ func timeToMsDosTime(t time.Time) (fDate uint16, fTime uint16) {
 	return
 }
 
-// ModTime returns the modification time in UTC.
-// This returns Modified if non-zero, otherwise it computes the timestamp
-// from the legacy ModifiedDate and ModifiedTime fields.
+// ModTime returns the modification time in UTC using the legacy
+// ModifiedDate and ModifiedTime fields.
 //
 // Deprecated: Use Modified instead.
 func (h *FileHeader) ModTime() time.Time {
-	if !h.Modified.IsZero() {
-		return h.Modified.UTC() // Convert to UTC for compatibility
-	}
 	return msDosTimeToTime(h.ModifiedDate, h.ModifiedTime)
 }
 
diff --git a/src/archive/zip/writer.go b/src/archive/zip/writer.go
index bcab212d40..14a5ee48c1 100644
--- a/src/archive/zip/writer.go
+++ b/src/archive/zip/writer.go
@@ -310,7 +310,7 @@ func (w *Writer) CreateHeader(fh *FileHeader) (io.Writer, error) {
 		// This format happens to be identical for both local and central header
 		// if modification time is the only timestamp being encoded.
 		var mbuf [9]byte // 2*SizeOf(uint16) + SizeOf(uint8) + SizeOf(uint32)
-		mt := uint32(fh.ModTime().Unix())
+		mt := uint32(fh.Modified.Unix())
 		eb := writeBuf(mbuf[:])
 		eb.uint16(extTimeExtraID)
 		eb.uint16(5)  // Size: SizeOf(uint8) + SizeOf(uint32)