diff --git a/lib/utils/progress.dart b/lib/utils/progress.dart
index 2ae2542..c2a3f2f 100644
--- a/lib/utils/progress.dart
+++ b/lib/utils/progress.dart
@@ -25,13 +25,11 @@ String formatProgressMessage({
   final StringBuffer buffer = .new(prefixText);
 
   if (speed case final speed?) {
-    buffer.writeAll([" ", ?direction, Bytes.bits(speed * 8), "/s"]);
+    buffer.writeAll([" ", ?direction, Bytes.bits(speed * 8), "/s "]);
   }
 
-  buffer.write(" ");
-
   if (total.isNegativeOrZero) {
-    buffer.write(Bytes(processed).toString(" "));
+    buffer.write(Bytes(processed));
   } else {
     buffer.write(percentFormatter.format(processed / total));
   }
diff --git a/test/utils/progress_test.dart b/test/utils/progress_test.dart
index f646019..861e428 100644
--- a/test/utils/progress_test.dart
+++ b/test/utils/progress_test.dart
@@ -6,7 +6,7 @@ void main() {
     test("handles unknown totals", () {
       expect(
         formatProgressMessage(processed: 1024, total: -1),
-        contains("1.0 KB"),
+        contains("1.0KB"),
       );
     });
   });