diff --git a/src/playlist_manager.cpp b/src/playlist_manager.cpp
index 3a98812..fa87022 100644
--- a/src/playlist_manager.cpp
+++ b/src/playlist_manager.cpp
@@ -39,16 +39,18 @@ void PlaylistManager::scan_files() {
 				String folder = data.substring(eq + 1);
 				TRACE("  Adding mapping: %s=>%s\n", rfid_id.c_str(), folder.c_str());
 				_map[rfid_id] = folder;
-
-				bool found=false;
-				for (String f: folders) {
-					if (f.equals(folder)) {
-						found = true;
-						break;
+				
+				if (folder.charAt(0)=='/') {
+					bool found=false;
+					for (String f: folders) {
+						if (f.equals(folder)) {
+							found = true;
+							break;
+						}
+					}
+					if (!found) {
+						INFO("WARNING: Found mapping for RFID id %s which maps to non-existing folder %s!\n", rfid_id.c_str(), folder.c_str());
 					}
-				}
-				if (!found) {
-					INFO("WARNING: Found mapping for RFID id %s which maps to non-existing folder %s!\n", rfid_id.c_str(), folder.c_str());
 				}
 			}
 		}