diff --git a/tasks/main.yml b/tasks/main.yml
index f2e7979..c3a554b 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -27,7 +27,7 @@
   lineinfile:
     path: "/home/{{ item }}/.bashrc"
     regexp: '^su() '
-    line: "su() { if [[ $1 == "-" ]]; then command machinectl shell --uid "$2"; else command machinectl shell --uid "$1"; fi; }"
+    line: "su() { if [[ $1 == \"-\" ]]; then command machinectl shell --uid \"$2\"; else command machinectl shell --uid \"$1\"; fi; }"
   loop: "{{ service_users }}"
 
 - lineinfile: