diff --git a/tests/bonsai/aliases b/tests/bonsai/aliases
new file mode 100644
index 0000000..f7dfb28
--- /dev/null
+++ b/tests/bonsai/aliases
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+alias "$UTIL=$BIN/$UTIL"
diff --git a/tests/bonsai/dj.sh b/tests/bonsai/dj.sh
index be5ca49..eaefaa9 100755
--- a/tests/bonsai/dj.sh
+++ b/tests/bonsai/dj.sh
@@ -7,6 +7,8 @@
 # permitted in any medium without royalty provided the copyright notice and this
 # notice are preserved.  This file is offered as-is, without any warranty.
 
+. tests/bonsai/aliases
+
 ! dj -h
 
 # This test is theoretically Linux-dependent; write(2) should return -1 on
diff --git a/tests/bonsai/false.sh b/tests/bonsai/false.sh
index 670feba..6098b4f 100755
--- a/tests/bonsai/false.sh
+++ b/tests/bonsai/false.sh
@@ -7,5 +7,7 @@
 # permitted in any medium without royalty provided the copyright notice and this
 # notice are preserved.  This file is offered as-is, without any warranty.
 
+. tests/bonsai/aliases
+
 ! false
 ! false -h
diff --git a/tests/bonsai/intcmp.sh b/tests/bonsai/intcmp.sh
index 7acb28a..c566877 100755
--- a/tests/bonsai/intcmp.sh
+++ b/tests/bonsai/intcmp.sh
@@ -7,6 +7,8 @@
 # permitted in any medium without royalty provided the copyright notice and this
 # notice are preserved.  This file is offered as-is, without any warranty.
 
+. tests/bonsai/aliases
+
 intcmp -e     3 3 3
 intcmp -g     3 2 1
 intcmp -l     1 2 3
diff --git a/tests/bonsai/mm.sh b/tests/bonsai/mm.sh
new file mode 100755
index 0000000..3ef1f99
--- /dev/null
+++ b/tests/bonsai/mm.sh
@@ -0,0 +1,20 @@
+#!/bin/sh
+# Copyright (c) 2024 DTB <trinity@trinity.moe>
+# Copyright (c) 2024 Emma Tebibyte <emma@tebibyte.media>
+# SPDX-License-Identifier: FSFAP
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice and this
+# notice are preserved.  This file is offered as-is, without any warranty.
+
+. tests/bonsai/aliases
+
+exec 3>&1
+
+! mm -h
+
+# mm(1) will error if positional arguments are given without -i or -o
+! mm argument
+
+# check if stderr is empty upon specifying -e
+! "$BIN/strcmp" "$(printf 'test\n' | mm -i - -e 2>&1 1>&3)" ''
diff --git a/tests/bonsai/strcmp.sh b/tests/bonsai/strcmp.sh
index 82f2781..9c7ceb0 100755
--- a/tests/bonsai/strcmp.sh
+++ b/tests/bonsai/strcmp.sh
@@ -7,6 +7,8 @@
 # permitted in any medium without royalty provided the copyright notice and this
 # notice are preserved.  This file is offered as-is, without any warranty.
 
+. tests/bonsai/aliases
+
 strcmp equals equals
 ! strcmp inequals equals
 strcmp - -
diff --git a/tests/bonsai/true.sh b/tests/bonsai/true.sh
index e8ed913..39d3d53 100755
--- a/tests/bonsai/true.sh
+++ b/tests/bonsai/true.sh
@@ -7,5 +7,7 @@
 # permitted in any medium without royalty provided the copyright notice and this
 # notice are preserved.  This file is offered as-is, without any warranty.
 
+. tests/bonsai/aliases
+
 true
 true -h
diff --git a/tests/test.sh b/tests/test.sh
index faaae5e..b439464 100755
--- a/tests/test.sh
+++ b/tests/test.sh
@@ -23,8 +23,6 @@ for script in tests/bonsai/*.sh; do
 	export UTIL="$(printf '%s\n' "$script" \
 		| sed -e 's/\.sh//g' -e 's;tests\/bonsai\/;;g')"
 
-	alias "$UTIL"="$BIN/$UTIL"
-
 	printf '%s: %s: Testing utility.\n' "$0" "$UTIL"
 	"$script"
 	printf '\n'