diff --git a/src/main/java/uk/ac/rhul/cs/javatester/TesterOutput.java b/src/main/java/uk/ac/rhul/cs/javatester/TesterOutput.java
index b751923ae2f25385d4ceff2200879a3a101add85..c80fed12e61821e051c5108497a5494b196937c5 100644
--- a/src/main/java/uk/ac/rhul/cs/javatester/TesterOutput.java
+++ b/src/main/java/uk/ac/rhul/cs/javatester/TesterOutput.java
@@ -48,7 +48,7 @@ public class TesterOutput {
                 indented = CODE_INDENT + code;
             } else if (code.length() > 0) {
                 indented
-                    = CODE_INDENT + code.replaceAll("\n", "\n" + CODE_INDENT);
+                    = CODE_INDENT + code.replaceAll("\n(?!$)", "\n" + CODE_INDENT);
             }
         }