diff --git a/t/t3203-branch-output.sh b/t/t3203-branch-output.sh
index d65586541d..b945faf470 100755
--- a/t/t3203-branch-output.sh
+++ b/t/t3203-branch-output.sh
@@ -8,6 +8,7 @@ test_expect_success 'make commits' '
 	echo content >file &&
 	git add file &&
 	git commit -m one &&
+	git branch -M main &&
 	echo content >>file &&
 	git commit -a -m two
 '
@@ -26,7 +27,7 @@ test_expect_success 'make remote branches' '
 cat >expect <<'EOF'
   branch-one
   branch-two
-* master
+* main
 EOF
 test_expect_success 'git branch shows local branches' '
 	git branch >actual &&
@@ -60,7 +61,7 @@ test_expect_success 'git branch -r shows remote branches' '
 cat >expect <<'EOF'
   branch-one
   branch-two
-* master
+* main
   remotes/origin/HEAD -> origin/branch-one
   remotes/origin/branch-one
   remotes/origin/branch-two
@@ -152,7 +153,7 @@ test_expect_success 'git branch shows detached HEAD properly' '
 * (HEAD detached at $(git rev-parse --short HEAD^0))
   branch-one
   branch-two
-  master
+  main
 EOF
 	git checkout HEAD^0 &&
 	git branch >actual &&
@@ -160,12 +161,12 @@ EOF
 '
 
 test_expect_success 'git branch shows detached HEAD properly after checkout --detach' '
-	git checkout master &&
+	git checkout main &&
 	cat >expect <<EOF &&
 * (HEAD detached at $(git rev-parse --short HEAD^0))
   branch-one
   branch-two
-  master
+  main
 EOF
 	git checkout --detach &&
 	git branch >actual &&
@@ -177,7 +178,7 @@ test_expect_success 'git branch shows detached HEAD properly after moving' '
 * (HEAD detached from $(git rev-parse --short HEAD))
   branch-one
   branch-two
-  master
+  main
 EOF
 	git reset --hard HEAD^1 &&
 	git branch >actual &&
@@ -189,9 +190,9 @@ test_expect_success 'git branch shows detached HEAD properly from tag' '
 * (HEAD detached at fromtag)
   branch-one
   branch-two
-  master
+  main
 EOF
-	git tag fromtag master &&
+	git tag fromtag main &&
 	git checkout fromtag &&
 	git branch >actual &&
 	test_i18ncmp expect actual
@@ -202,7 +203,7 @@ test_expect_success 'git branch shows detached HEAD properly after moving from t
 * (HEAD detached from fromtag)
   branch-one
   branch-two
-  master
+  main
 EOF
 	git reset --hard HEAD^1 &&
 	git branch >actual &&
@@ -214,7 +215,7 @@ test_expect_success 'git branch `--sort` option' '
 	* (HEAD detached from fromtag)
 	  branch-two
 	  branch-one
-	  master
+	  main
 	EOF
 	git branch --sort=objectsize >actual &&
 	test_i18ncmp expect actual
@@ -223,7 +224,7 @@ test_expect_success 'git branch `--sort` option' '
 test_expect_success 'git branch --points-at option' '
 	cat >expect <<-\EOF &&
 	  branch-one
-	  master
+	  main
 	EOF
 	git branch --points-at=branch-one >actual &&
 	test_cmp expect actual
@@ -251,7 +252,7 @@ test_expect_success 'local-branch symrefs shortened properly' '
 
 test_expect_success 'sort branches, ignore case' '
 	(
-		git init sort-icase &&
+		git init -b main sort-icase &&
 		cd sort-icase &&
 		test_commit initial &&
 		git branch branch-one &&
@@ -260,14 +261,14 @@ test_expect_success 'sort branches, ignore case' '
 		cat >expected <<-\EOF &&
 		BRANCH-two
 		branch-one
-		master
+		main
 		EOF
 		test_cmp expected actual &&
 		git branch --list -i | awk "{print \$NF}" >actual &&
 		cat >expected <<-\EOF &&
 		branch-one
 		BRANCH-two
-		master
+		main
 		EOF
 		test_cmp expected actual
 	)
@@ -279,7 +280,7 @@ test_expect_success 'git branch --format option' '
 	Refname is refs/heads/ambiguous
 	Refname is refs/heads/branch-one
 	Refname is refs/heads/branch-two
-	Refname is refs/heads/master
+	Refname is refs/heads/main
 	Refname is refs/heads/ref-to-branch
 	Refname is refs/heads/ref-to-remote
 	EOF
@@ -293,7 +294,7 @@ test_expect_success 'worktree colors correct' '
 	  ambiguous<RESET>
 	  branch-one<RESET>
 	+ <CYAN>branch-two<RESET>
-	  master<RESET>
+	  main<RESET>
 	  ref-to-branch<RESET> -> branch-one
 	  ref-to-remote<RESET> -> origin/branch-one
 	EOF
@@ -306,9 +307,9 @@ test_expect_success 'worktree colors correct' '
 '
 
 test_expect_success "set up color tests" '
-	echo "<RED>master<RESET>" >expect.color &&
-	echo "master" >expect.bare &&
-	color_args="--format=%(color:red)%(refname:short) --list master"
+	echo "<RED>main<RESET>" >expect.color &&
+	echo "main" >expect.bare &&
+	color_args="--format=%(color:red)%(refname:short) --list main"
 '
 
 test_expect_success '%(color) omitted without tty' '
@@ -329,9 +330,9 @@ test_expect_success '--color overrides auto-color' '
 	test_cmp expect.color actual
 '
 
-test_expect_success PREPARE_FOR_MAIN_BRANCH 'verbose output lists worktree path' '
+test_expect_success 'verbose output lists worktree path' '
 	one=$(git rev-parse --short HEAD) &&
-	two=$(git rev-parse --short master) &&
+	two=$(git rev-parse --short main) &&
 	cat >expect <<-EOF &&
 	* (HEAD detached from fromtag) $one one
 	  ambiguous                    $one one