diff --git a/app/PdePreprocessorOro.java b/app/PdePreprocessorOro.java
index 5a978b7c7..4b3c56394 100644
--- a/app/PdePreprocessorOro.java
+++ b/app/PdePreprocessorOro.java
@@ -33,6 +33,7 @@ public class PdePreprocessorOro extends PdePreprocessor {
 
   public PdePreprocessorOro(String program, String buildPath) {
     super(program, buildPath);
+    this.program = program;
   }
 
   // writes .java file into buildPath