diff --git a/plugins/groovy/jps-plugin/src/org/jetbrains/jps/incremental/groovy/InProcessGroovyc.java b/plugins/groovy/jps-plugin/src/org/jetbrains/jps/incremental/groovy/InProcessGroovyc.java
index 1d8147a0b561..1bb6f0a51169 100644
--- a/plugins/groovy/jps-plugin/src/org/jetbrains/jps/incremental/groovy/InProcessGroovyc.java
+++ b/plugins/groovy/jps-plugin/src/org/jetbrains/jps/incremental/groovy/InProcessGroovyc.java
@@ -63,7 +63,7 @@ class InProcessGroovyc {
         @Override
         public boolean shouldCacheData(@NotNull URL url) {
           try {
-            String file = new File(url.toURI()).getPath();
+            String file = FileUtil.toCanonicalPath(new File(url.toURI()).getPath());
             for (String output : outputs) {
               if (FileUtil.startsWith(output, file)) {
                 return false;