diff --git a/t/t6006-rev-list-format.sh b/t/t6006-rev-list-format.sh
index cfb74d0e03..1f7d3f7acc 100755
--- a/t/t6006-rev-list-format.sh
+++ b/t/t6006-rev-list-format.sh
@@ -111,14 +111,14 @@ EOF
 # we don't test relative here
 test_format author %an%n%ae%n%ad%n%aD%n%at <<EOF
 commit $head2
-A U Thor
-author@example.com
+$GIT_AUTHOR_NAME
+$GIT_AUTHOR_EMAIL
 Thu Apr 7 15:13:13 2005 -0700
 Thu, 7 Apr 2005 15:13:13 -0700
 1112911993
 commit $head1
-A U Thor
-author@example.com
+$GIT_AUTHOR_NAME
+$GIT_AUTHOR_EMAIL
 Thu Apr 7 15:13:13 2005 -0700
 Thu, 7 Apr 2005 15:13:13 -0700
 1112911993
@@ -126,14 +126,14 @@ EOF
 
 test_format committer %cn%n%ce%n%cd%n%cD%n%ct <<EOF
 commit $head2
-C O Mitter
-committer@example.com
+$GIT_COMMITTER_NAME
+$GIT_COMMITTER_EMAIL
 Thu Apr 7 15:13:13 2005 -0700
 Thu, 7 Apr 2005 15:13:13 -0700
 1112911993
 commit $head1
-C O Mitter
-committer@example.com
+$GIT_COMMITTER_NAME
+$GIT_COMMITTER_EMAIL
 Thu Apr 7 15:13:13 2005 -0700
 Thu, 7 Apr 2005 15:13:13 -0700
 1112911993
@@ -410,7 +410,7 @@ test_expect_success 'empty email' '
 	test_tick &&
 	C=$(GIT_AUTHOR_EMAIL= git commit-tree HEAD^{tree} </dev/null) &&
 	A=$(git show --pretty=format:%an,%ae,%ad%n -s $C) &&
-	verbose test "$A" = "A U Thor,,Thu Apr 7 15:14:13 2005 -0700"
+	verbose test "$A" = "$GIT_AUTHOR_NAME,,Thu Apr 7 15:14:13 2005 -0700"
 '
 
 test_expect_success 'del LF before empty (1)' '
@@ -495,7 +495,7 @@ test_expect_success '%gd shortens ref name' '
 '
 
 test_expect_success 'reflog identity' '
-	echo "C O Mitter:committer@example.com" >expect &&
+	echo "$GIT_COMMITTER_NAME:$GIT_COMMITTER_EMAIL" >expect &&
 	git log -g -1 --format="%gn:%ge" >actual &&
 	test_cmp expect actual
 '