diff --git a/syntax/markdown.vim b/syntax/markdown.vim
index 8ddee00..343057e 100644
--- a/syntax/markdown.vim
+++ b/syntax/markdown.vim
@@ -3,8 +3,8 @@
 syntax region tkLink matchgroup=tkBrackets start=/\[\[/ end=/\]\]/ display oneline
 syntax region tkHighlight matchgroup=tkBrackets start=/==/ end=/==/ display oneline
 
-syntax match tkTag "\v#[a-zA-Z]+[a-zA-Z0-9/-_]*"
-syntax match tkTag "\v:[a-zA-Z]+[a-zA-Z0-9/-_]*:"
+syntax match tkTag "\v#[a-zA-Z]+[a-zA-Z0-9/\-_]*"
+syntax match tkTag "\v:[a-zA-Z]+[a-zA-Z0-9/\-_]*:"
 
 syntax match tkTagSep "\v\s*,\s*" contained
 syntax region tkTag matchgroup=tkBrackets start=/^tags\s*:\s*\[\s*/ end=/\s*\]\s*$/ contains=tkTagSep display oneline
diff --git a/syntax/telekasten.vim b/syntax/telekasten.vim
index 989a19d..615c3b7 100644
--- a/syntax/telekasten.vim
+++ b/syntax/telekasten.vim
@@ -5,8 +5,8 @@ runtime! syntax/markdown.vim
 syntax region tkLink matchgroup=tkBrackets start=/\[\[/ end=/\]\]/ display oneline
 syntax region tkHighlight matchgroup=tkBrackets start=/==/ end=/==/ display oneline
 
-syntax match tkTag "\v#[a-zA-Z]+[a-zA-Z0-9/-_]*"
-syntax match tkTag "\v:[a-zA-Z]+[a-zA-Z0-9/-_]*:"
+syntax match tkTag "\v#[a-zA-Z]+[a-zA-Z0-9/\-_]*"
+syntax match tkTag "\v:[a-zA-Z]+[a-zA-Z0-9/\-_]*:"
 
 syntax match tkTagSep "\v\s*,\s*" contained
 syntax region tkTag matchgroup=tkBrackets start=/^tags\s*:\s*\[\s*/ end=/\s*\]\s*$/ contains=tkTagSep display oneline