diff --git a/uash.ua b/uash.ua
index 399b0a7..4d3f2e1 100755
--- a/uash.ua
+++ b/uash.ua
@@ -31,8 +31,13 @@
     | &ep"exit: too many arguments")
   )
 
+  # handle uiua eval and shell fallback
+  # ? {...}
   Otherwise ← (
-    ⍣(°0&runi|&ep⊂"failed to run " /◇$"_ _")
+    ⍣(⍩(&pf◌)°0&runc ⊂⊙(□/◇$"_ _") ⊜□⊸≠@\s $ uiua eval --experimental
+    | °0&runi
+    | &ep⊂"failed to run " /◇$"_ _"
+    )
   )
 └─╴