diff --git a/tests/test_in_vterm/test.sh b/tests/test_in_vterm/test.sh
index deafb560..b76d03f7 100755
--- a/tests/test_in_vterm/test.sh
+++ b/tests/test_in_vterm/test.sh
@@ -2,8 +2,6 @@
 . tests/bot-ci/scripts/common/main.sh
 set +x
 
-: ${POWERLINE_TMUX_EXE:=tmux}
-
 FAILED=0
 
 rm -rf tests/vterm
@@ -26,11 +24,12 @@ test_tmux() {
 	if ! which "${POWERLINE_TMUX_EXE}" ; then
 		return 0
 	fi
-	ln -s "$(which "${POWERLINE_TMUX_EXE}")" tests/vterm/path
-	if ! "${PYTHON}" tests/test_in_vterm/test_tmux.py; then
+	ln -sf "$(which "${POWERLINE_TMUX_EXE}")" tests/vterm/path
+	f=tests/test_in_vterm/test_tmux.py
+	if ! "${PYTHON}" $f ; then
 		echo "Failed vterm test $f"
 		FAILED=1
-		FAIL_SUMMARY="$FAIL_SUMMARY${NL}F $f"
+		FAIL_SUMMARY="$FAIL_SUMMARY${NL}F $POWERLINE_TMUX_EXE $f"
 		for file in tests/vterm/*.log ; do
 			if ! test -e "$file" ; then
 				break
@@ -43,7 +42,14 @@ test_tmux() {
 	fi
 }
 
-test_tmux || true
+if test -z "$POWERLINE_TMUX_EXE" && test -d tests/bot-ci/deps/tmux ; then
+	for tmux in tests/bot-ci/deps/tmux/tmux-*/tmux ; do
+		export POWERLINE_TMUX_EXE="$PWD/$tmux"
+		test_tmux || true
+	done
+else
+	test_tmux || true
+fi
 
 if test $FAILED -eq 0 ; then
 	echo "$FAIL_SUMMARY"