diff --git a/src/propeller/problems/PSB1/grade.cljc b/src/propeller/problems/PSB1/grade.cljc
index 399619e..008ad95 100644
--- a/src/propeller/problems/PSB1/grade.cljc
+++ b/src/propeller/problems/PSB1/grade.cljc
@@ -49,7 +49,7 @@
                                                           :in4 (nth input 3)
                                                           :in5 (nth input 4)})
                          (:step-limit argmap))
-                        :string))
+                        :print))
                      inputs)
         errors (map (fn [correct-output output]
                       (if (= output :no-stack-item)
diff --git a/src/propeller/problems/PSB1/scrabble_score.cljc b/src/propeller/problems/PSB1/scrabble_score.cljc
index d77ab53..3518cc7 100644
--- a/src/propeller/problems/PSB1/scrabble_score.cljc
+++ b/src/propeller/problems/PSB1/scrabble_score.cljc
@@ -50,7 +50,7 @@
   (utils/not-lazy
    (concat
       ;;; stack-specific instructions
-    (get-stack-instructions #{:exec :integer :boolean :char :vector_integer :string :print})
+    (get-stack-instructions #{:exec :integer :boolean :char :vector_integer :string})
       ;;; input instructions
     (list :in1)
       ;;; close