diff --git a/lib/msf/ui/console/driver.rb b/lib/msf/ui/console/driver.rb
index f43d99e36c85..1e303bf4ee75 100644
--- a/lib/msf/ui/console/driver.rb
+++ b/lib/msf/ui/console/driver.rb
@@ -593,7 +593,7 @@ def on_variable_set(glob, var, val)
       when "prompt"
         update_prompt(val, framework.datastore['PromptChar'] || DefaultPromptChar, true)
       when "promptchar"
-        update_prompt(framework.datastore['Prompt'], val, true)
+        update_prompt(framework.datastore['Prompt'] || DefaultPrompt, val, true)
     end
   end