diff --git a/src/blocks/scratch3_procedures.js b/src/blocks/scratch3_procedures.js
index 396e48f1..1f0cdf03 100644
--- a/src/blocks/scratch3_procedures.js
+++ b/src/blocks/scratch3_procedures.js
@@ -72,6 +72,12 @@ class Scratch3ProcedureBlocks {
     argumentReporterBoolean (args, util) {
         const value = util.getParam(args.VALUE);
         if (value === null) {
+            // tw: is compiled? and is turbowarp? should return true
+            // Yes, is compiled? is returning a technically incorrect value.
+            // This results in the least astonishment for users when they click on "is compiled?" on its own.
+            if (`${args.VALUE}`.toLowerCase() === 'is compiled?' || `${args.VALUE}`.toLowerCase() === 'is turbowarp?') {
+                return true;
+            }
             // When the parameter is not found in the most recent procedure
             // call, the default is always 0.
             return 0;