diff --git a/kitty/shell_integration.py b/kitty/shell_integration.py
index 0e50df9ca..5ac608d04 100644
--- a/kitty/shell_integration.py
+++ b/kitty/shell_integration.py
@@ -119,14 +119,14 @@ def setup_shell_integration(opts: Options, env: Dict[str, str]) -> bool:
 
 
 def modify_shell_environ(argv0: str, opts: Options, env: Dict[str, str]) -> None:
+    shell = get_supported_shell_name(argv0)
+    if shell is None:
+        return
     if 'disabled' in set(opts.shell_integration.split()):
         return
     env['KITTY_SHELL_INTEGRATION'] = opts.shell_integration
     if not shell_integration_allows_rc_modification(opts):
         return
-    shell = get_supported_shell_name(argv0)
-    if shell is None:
-        return
     f = ENV_MODIFIERS.get(shell)
     if f is not None:
         try: