diff --git a/source/dub/dub.d b/source/dub/dub.d
index 441a230..b2d8859 100644
--- a/source/dub/dub.d
+++ b/source/dub/dub.d
@@ -150,8 +150,8 @@
 		try m_json = jsonFromFile(m_root ~ ".dub/dub.json", true);
 		catch(Exception t) logDebug("Failed to read .dub/dub.json: %s", t.msg);
 
-		if( !exists(to!string(m_root~PackageJsonFilename)) ){
-			logWarn("There was no '"~PackageJsonFilename~"' found for the application in '%s'.", m_root);
+		if( !existsFile(m_root~PackageJsonFilename) ){
+			logWarn("There was no '"~PackageJsonFilename~"' found for the application in '%s'.", m_root.toNativeString());
 			return;
 		}