diff --git a/vorbiscomment/vcomment.c b/vorbiscomment/vcomment.c
index d37ba08..83ce1db 100644
--- a/vorbiscomment/vcomment.c
+++ b/vorbiscomment/vcomment.c
@@ -34,7 +34,7 @@
struct option long_options[] = {
{"list",0,0,'l'},
{"append",0,0,'a'},
- {"tag",0,0,'t'},
+ {"tag",required_argument,0,'t'},
{"write",0,0,'w'},
{"help",0,0,'h'},
{"quiet",0,0,'q'}, /* unused */