diff --git a/core/src/main/groovy/com/muwire/core/files/DirectoryWatcher.groovy b/core/src/main/groovy/com/muwire/core/files/DirectoryWatcher.groovy
index 43165e42..3ae3a64f 100644
--- a/core/src/main/groovy/com/muwire/core/files/DirectoryWatcher.groovy
+++ b/core/src/main/groovy/com/muwire/core/files/DirectoryWatcher.groovy
@@ -120,7 +120,7 @@ class DirectoryWatcher {
     
     private static File join(Path parent, Path path) {
         File parentFile = parent.toFile().getCanonicalFile()
-        new File(parentFile, path.toFile().getName())
+        new File(parentFile, path.toFile().getName()).getCanonicalFile()
     }
     
     private void publish() {
diff --git a/core/src/main/groovy/com/muwire/core/files/HasherService.groovy b/core/src/main/groovy/com/muwire/core/files/HasherService.groovy
index b3701a30..15c5f0ae 100644
--- a/core/src/main/groovy/com/muwire/core/files/HasherService.groovy
+++ b/core/src/main/groovy/com/muwire/core/files/HasherService.groovy
@@ -24,7 +24,7 @@ class HasherService {
 	}
 	
 	void onFileSharedEvent(FileSharedEvent evt) {
-        if (fileManager.fileToSharedFile.containsKey(evt.file))
+        if (fileManager.fileToSharedFile.containsKey(evt.file.getCanonicalFile()))
             return
 		executor.execute( { -> process(evt.file) } as Runnable)
 	}