diff --git a/read/read.go b/read/read.go
index 719b351..07a4500 100644
--- a/read/read.go
+++ b/read/read.go
@@ -22,7 +22,7 @@ func isSpaceChar(c byte) bool {
 }
 
 func isSymbolChar(c byte) bool {
-	return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_' || c == '-' || c == '/' || c == '\'' || c == '+' || c == '-' || c == '*'
+	return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_' || c == '/' || c == '\'' || c == '+' || c == '-' || c == '*'
 }
 
 func readForm(s string, pos int, ns string) (any, any, int) {