diff --git a/core/templates/init.fish b/core/templates/init.fish
index dc482da..7f6ab02 100644
--- a/core/templates/init.fish
+++ b/core/templates/init.fish
@@ -3,7 +3,9 @@ function {{ alias }} -d "Suggest fixes to the previous command"
 end
 
 {%if cnf %}
-function fish_command_not_found --on-event fish_command_not_found
-	eval $(_PR_LAST_COMMAND="$argv" _PR_ALIAS="$(alias)" _PR_SHELL="fish" _PR_MODE="cnf" "{{ binary_path }}")
+if status is-interactive
+	function fish_command_not_found --on-event fish_command_not_found
+		eval $(_PR_LAST_COMMAND="$argv" _PR_ALIAS="$(alias)" _PR_SHELL="fish" _PR_MODE="cnf" "{{ binary_path }}")
+	end
 end
 {% endif %}