diff --git a/generate/protocol.go b/generate/protocol.go
index 5a0dd16..02fd456 100644
--- a/generate/protocol.go
+++ b/generate/protocol.go
@@ -1,4 +1,4 @@
-package protocol
+package generate
 
 import "io"
 import "fmt"
@@ -227,24 +227,18 @@ func parseTag(text string) (uint16, error) {
 
 func splitMessageHeading(text string) (uint16, string, error) {
 	text = strings.TrimSpace(text)
-	if !strings.HasPrefix(text, "(") {
-		return 0, "", fmt.Errorf(
-			"malformed message heading '%s': no method number",
-			text)
-	}
-	text = strings.TrimPrefix(text, "(")
-	methodText, name, ok := strings.Cut(text, ")")
+	methodText, name, ok := strings.Cut(text, " ")
 	if !ok {
 		return 0, "", fmt.Errorf(
 			"malformed message heading '%s': no message name",
 			text)
 	}
-	method, err := strconv.ParseUint(text, 10, 16)
+	method, err := strconv.ParseUint(methodText, 16, 16)
 	if err != nil {
 		return 0, "", fmt.Errorf(
 			"malformed method number '%s': %w",
 			methodText, err)
 	}
-	name = strings.TrimSpace(text)
+	name = strings.TrimSpace(name)
 	return uint16(method), name, nil
 }