diff --git a/src/kiri/dev/cam/Makera.Carvera.Air.json b/src/kiri/dev/cam/Makera.Carvera.Air.json
index 8474dd185..eba7c3cc2 100644
--- a/src/kiri/dev/cam/Makera.Carvera.Air.json
+++ b/src/kiri/dev/cam/Makera.Carvera.Air.json
@@ -19,11 +19,11 @@
         "M30 ; program end"
     ],
     "gcodeDwell": [
-        "G4 P{time} ; dwell for {time}ms"
+        "G4 P{time} ; dwell for {time}s"
     ],
     "gcodeSpindle": [
         "M3 S{spindle}",
-        "G4 P4000"
+        "G4 P4 ; pause during 4 seconds"
     ],
     "gcodeChange": [
         "M6 T{tool} ; change tool to '{tool_name}'"