diff --git a/compiler/tests/org/jetbrains/jet/InTextDirectivesUtils.java b/compiler/tests/org/jetbrains/jet/InTextDirectivesUtils.java
index c8b116f4cec..4c8917c3316 100644
--- a/compiler/tests/org/jetbrains/jet/InTextDirectivesUtils.java
+++ b/compiler/tests/org/jetbrains/jet/InTextDirectivesUtils.java
@@ -160,6 +160,7 @@ public final class InTextDirectivesUtils {
                 String line;
 
                 while ((line = reader.readLine()) != null) {
+                    line = line.trim();
                     if (line.startsWith("//")) {
                         String uncommentedLine = line.substring(2).trim();
                         if (!uncommentedLine.isEmpty()) {