diff --git a/info/exercises/src/ex-01/main.tex b/info/exercises/src/ex-01/main.tex
index 694172abf36687e281a62e616f07144f507819b7..91823ae273abe47003d4810271efa1caa62bf502 100644
--- a/info/exercises/src/ex-01/main.tex
+++ b/info/exercises/src/ex-01/main.tex
@@ -2,8 +2,10 @@
 
 \input{../macro}
 
-\if\ANSWERS1
-  \printanswers
+\ifdefined\ANSWERS
+  \if\ANSWERS1
+    \printanswers
+  \fi
 \fi
 
 \title{CS 320 \\ Computer Language Processing\\Exercises: Weeks 1 and 2}