diff --git a/skylab/skylab_gen.go b/skylab/skylab_gen.go
index 9a2366e..9b5fb12 100644
--- a/skylab/skylab_gen.go
+++ b/skylab/skylab_gen.go
@@ -1,4 +1,4 @@
-// generated by gen_skylab.go at 2023-06-27 20:32:07.43630691 -0500 CDT m=+0.003975675 DO NOT EDIT!
+// generated by gen_skylab.go at 2023-06-28 08:15:54.687487803 -0500 CDT m=+0.002619032 DO NOT EDIT!
 
 package skylab
 
@@ -236,7 +236,7 @@ var idMap = map[uint32]bool{
 // If the CAN ID is unknown, it will return an error.
 func FromCanFrame(id uint32, data []byte) (Packet, error) {
 	if !idMap[id] {
-		return nil, &UnknownIdError{ id }
+		return nil, &UnknownIdError{ uint64(id) }
 	}
 	switch id {
 	case 0x10:
diff --git a/skylab/templates/golang.go.tmpl b/skylab/templates/golang.go.tmpl
index 46aae41..5f781c9 100644
--- a/skylab/templates/golang.go.tmpl
+++ b/skylab/templates/golang.go.tmpl
@@ -114,7 +114,7 @@ var idMap = map[uint32]bool{
 // If the CAN ID is unknown, it will return an error.
 func FromCanFrame(id uint32, data []byte) (Packet, error) {
 	if !idMap[id] {
-		return nil, &UnknownIdError{ id }
+		return nil, &UnknownIdError{ uint64(id) }
 	}
 	switch id {
 {{- range $p := .Packets }}