diff --git a/pokemonterminal/terminal/adapters/iterm.py b/pokemonterminal/terminal/adapters/iterm.py
index c2609be..2eebebc 100644
--- a/pokemonterminal/terminal/adapters/iterm.py
+++ b/pokemonterminal/terminal/adapters/iterm.py
@@ -6,7 +6,7 @@
 
 class ItermProvider(_TProv):
     # OSA script that will change the terminal background image
-    osa_script_fmt = """tell application "iTerm2"
+    __osa_script_fmt = """tell application "iTerm2"
     \ttell current session of current window
     \t\tset background image to "{}"
     \tend tell