diff --git a/t/t1504-ceiling-dirs.sh b/t/t1504-ceiling-dirs.sh
index e377d48902..df5ad8c686 100755
--- a/t/t1504-ceiling-dirs.sh
+++ b/t/t1504-ceiling-dirs.sh
@@ -13,7 +13,7 @@ test_fail() {
 	"git rev-parse --show-prefix"
 }
 
-TRASH_ROOT="$(pwd)"
+TRASH_ROOT="$PWD"
 ROOT_PARENT=$(dirname "$TRASH_ROOT")
 
 
diff --git a/t/t6200-fmt-merge-msg.sh b/t/t6200-fmt-merge-msg.sh
index 8f5a06f7dd..2049ab6cf8 100755
--- a/t/t6200-fmt-merge-msg.sh
+++ b/t/t6200-fmt-merge-msg.sh
@@ -83,13 +83,13 @@ test_expect_success 'merge-msg test #1' '
 '
 
 cat >expected <<EOF
-Merge branch 'left' of $TEST_DIRECTORY/$test
+Merge branch 'left' of $(pwd)
 EOF
 
 test_expect_success 'merge-msg test #2' '
 
 	git checkout master &&
-	git fetch "$TEST_DIRECTORY/$test" left &&
+	git fetch "$(pwd)" left &&
 
 	git fmt-merge-msg <.git/FETCH_HEAD >actual &&
 	test_cmp expected actual
diff --git a/t/test-lib.sh b/t/test-lib.sh
index 4720b9a92b..0a0696abc9 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -649,5 +649,9 @@ case $(uname -s) in
 	sum () {
 		md5sum "$@"
 	}
+	# git sees Windows-style pwd
+	pwd () {
+		builtin pwd -W
+	}
 	;;
 esac