diff --git a/youtube_dl/extractor/vidme.py b/youtube_dl/extractor/vidme.py
index a7971d72e..0e69ff5ce 100644
--- a/youtube_dl/extractor/vidme.py
+++ b/youtube_dl/extractor/vidme.py
@@ -263,7 +263,7 @@ class VidmeListBaseIE(InfoExtractor):
 
 class VidmeUserIE(VidmeListBaseIE):
     IE_NAME = 'vidme:user'
-    _VALID_URL = r'https?://vid\.me/(?:e/)?(?P<id>[\da-zA-Z]{6,})(?!/likes)(?:[^\da-zA-Z]|$)'
+    _VALID_URL = r'https?://vid\.me/(?:e/)?(?P<id>[\da-zA-Z_-]{6,})(?!/likes)(?:[^\da-zA-Z]|$)'
     _API_ITEM = 'list'
     _TITLE = 'Videos'
     _TEST = {
@@ -278,7 +278,7 @@ class VidmeUserIE(VidmeListBaseIE):
 
 class VidmeUserLikesIE(VidmeListBaseIE):
     IE_NAME = 'vidme:user:likes'
-    _VALID_URL = r'https?://vid\.me/(?:e/)?(?P<id>[\da-zA-Z]{6,})/likes'
+    _VALID_URL = r'https?://vid\.me/(?:e/)?(?P<id>[\da-zA-Z_-]{6,})/likes'
     _API_ITEM = 'likes'
     _TITLE = 'Likes'
     _TEST = {