1 files changed, 1 insertions, 1 deletions
diff --git a/README.md b/README.md
index 018e315..fafb45c 100644
--- a/README.md
+++ b/README.md
@@ -54,7 +54,7 @@ function uart_callback(data)
 	end
 end
 
-port:write(mhz19.c_query)
+port:write(mh_z19.c_query)
 ```
 
 The sensor performs a CO₂ measurement every one to five seconds, depending on hardware revision.