diff --git a/_profile b/_profile
index 51478ad..1c63624 100644
--- a/_profile
+++ b/_profile
@@ -1,3 +1,5 @@
+[ $SHLVL -gt 1 ] && return
+
 # ~/.profile: executed by the command interpreter for login shells.
 # This file is not read by bash(1), if ~/.bash_profile or ~/.bash_login
 # exists.