diff --git a/ibus-pinyin/setup/ibus-setup-pinyin.in b/ibus-pinyin/setup/ibus-setup-pinyin.in
index 2566737..7517392 100644
--- a/ibus-pinyin/setup/ibus-setup-pinyin.in
+++ b/ibus-pinyin/setup/ibus-setup-pinyin.in
@@ -26,5 +26,5 @@ export IBUS_PREFIX=@prefix@
 export IBUS_DATAROOTDIR=@datarootdir@
 export IBUS_LOCALEDIR=@localedir@
 cd @prefix@/share/ibus-pinyin/setup/
-exec python main.py $@
+exec python3 main.py $@