diff --git a/git-add--interactive.perl b/git-add--interactive.perl
index f36c0078ac..b6cdcfef61 100755
--- a/git-add--interactive.perl
+++ b/git-add--interactive.perl
@@ -714,7 +714,7 @@ sub parse_diff {
 	if (defined $patch_mode_revision) {
 		push @diff_cmd, get_diff_reference($patch_mode_revision);
 	}
-	my @diff = run_cmd_pipe("git", @diff_cmd, "--", $path);
+	my @diff = run_cmd_pipe("git", @diff_cmd, qw(--no-color --), $path);
 	my @colored = ();
 	if ($diff_use_color) {
 		my @display_cmd = ("git", @diff_cmd, qw(--color --), $path);
diff --git a/t/t3701-add-interactive.sh b/t/t3701-add-interactive.sh
index f0a491ade1..1a24db7fcf 100755
--- a/t/t3701-add-interactive.sh
+++ b/t/t3701-add-interactive.sh
@@ -573,6 +573,7 @@ test_expect_success 'diffs can be colorized' '
 	echo content >test &&
 	printf y >y &&
 	force_color git add -p >output 2>&1 <y &&
+	git diff-files --exit-code &&
 
 	# We do not want to depend on the exact coloring scheme
 	# git uses for diffs, so just check that we saw some kind of color.