diff --git a/js/js.frontend/src/org/jetbrains/k2js/config/LibrarySourcesConfig.java b/js/js.frontend/src/org/jetbrains/k2js/config/LibrarySourcesConfig.java
index c472605dedc..ca2ddd4d2db 100644
--- a/js/js.frontend/src/org/jetbrains/k2js/config/LibrarySourcesConfig.java
+++ b/js/js.frontend/src/org/jetbrains/k2js/config/LibrarySourcesConfig.java
@@ -98,7 +98,7 @@ public class LibrarySourcesConfig extends Config {
             }
 
             if (file == null) {
-                LOG.error("File '" + path + "not found.'");
+                LOG.error("File '" + path + "' not found.'");
             }
             else {
                 JetFileCollector jetFileCollector = new JetFileCollector(jetFiles, actualModuleName, psiManager);