diff --git a/README.md b/README.md
index efb62c1..8f66807 100644
--- a/README.md
+++ b/README.md
@@ -113,7 +113,7 @@ node-argument := prop | value
 node-children := '{' nodes '}'
 node-space := ws* escline ws* | ws+
 
-identifier := [a-zA-Z] [a-zA-Z0-9!#$%&'*+\-./:<>?@\^_|~]* | string
+identifier := [a-zA-Z] [a-zA-Z0-9!$%&'*+\-./:<>?@\^_|~]* | string
 prop := identifier '=' value
 value := string | raw_string | number | boolean | 'null'
 
diff --git a/src/parser.rs b/src/parser.rs
index 66c1fea..d822424 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -55,14 +55,14 @@ pub(crate) fn node(input: &str) -> IResult<&str, Node, KdlParseError<&str>> {
     ))
 }
 
-/// `identifier := [a-zA-Z_] [a-zA-Z0-9!#$%&'*+\-./:<>?@\^_|~]* | string`
+/// `identifier := [a-zA-Z_] [a-zA-Z0-9!$%&'*+\-./:<>?@\^_|~]* | string`
 fn identifier(input: &str) -> IResult<&str, &str, KdlParseError<&str>> {
     alt((
         recognize(pair(
             alt((alpha1, tag("_"))),
             many0(alt((
                 alphanumeric1,
-                recognize(one_of("~!@#$%^&*-_+./:<>?")),
+                recognize(one_of("~!@$%^&*-_+./:<>?")),
             ))),
         )),
         string,