diff --git a/thefuck/rules/omnienv_no_such_command.py b/thefuck/rules/omnienv_no_such_command.py
index e2515ef6..ca8cc36d 100644
--- a/thefuck/rules/omnienv_no_such_command.py
+++ b/thefuck/rules/omnienv_no_such_command.py
@@ -25,10 +25,11 @@ def get_app_commands(app):
 
 
 def get_new_command(command):
-    app = command.script_parts[0]
-    app_commands = cache(which(app))(get_app_commands)(app)
     broken = re.findall(r"env: no such command ['`]([^']*)'", command.output)[0]
     matched = [replace_argument(command.script, broken, common_typo)
                for common_typo in COMMON_TYPOS.get(broken, [])]
+
+    app = command.script_parts[0]
+    app_commands = cache(which(app))(get_app_commands)(app)
     matched.extend(replace_command(command, broken, app_commands))
     return matched