diff --git a/j2k/src/org/jetbrains/jet/j2k/JavaToKotlinTranslator.java b/j2k/src/org/jetbrains/jet/j2k/JavaToKotlinTranslator.java
index 04b30a984e7..c1d6d4f28f0 100644
--- a/j2k/src/org/jetbrains/jet/j2k/JavaToKotlinTranslator.java
+++ b/j2k/src/org/jetbrains/jet/j2k/JavaToKotlinTranslator.java
@@ -20,6 +20,7 @@ import com.intellij.core.JavaCoreProjectEnvironment;
 import com.intellij.lang.java.JavaLanguage;
 import com.intellij.openapi.Disposable;
 import com.intellij.openapi.project.Project;
+import com.intellij.openapi.roots.ProjectRootModificationTracker;
 import com.intellij.psi.PsiElement;
 import com.intellij.psi.PsiFile;
 import com.intellij.psi.PsiFileFactory;
@@ -43,6 +44,13 @@ public class JavaToKotlinTranslator {
         }
     };
 
+    private static final ProjectRootModificationTracker NEVER_CHANGED = new ProjectRootModificationTracker() {
+        @Override
+        public long getModificationCount() {
+            return 0;
+        }
+    };
+
     private JavaToKotlinTranslator() {
     }
 
@@ -66,6 +74,8 @@ public class JavaToKotlinTranslator {
         JavaCoreApplicationEnvironment applicationEnvironment = new JavaCoreApplicationEnvironment(DISPOSABLE);
         JavaCoreProjectEnvironment javaCoreEnvironment = new JavaCoreProjectEnvironment(DISPOSABLE, applicationEnvironment);
 
+        javaCoreEnvironment.getProject().registerService(ProjectRootModificationTracker.class, NEVER_CHANGED);
+
         javaCoreEnvironment.addJarToClassPath(PathUtil.findRtJar());
         File annotations = findAnnotations();
         if (annotations != null && annotations.exists()) {