diff --git a/sinfox.h b/sinfox.h
index 4d688532..c256c259 100644
--- a/sinfox.h
+++ b/sinfox.h
@@ -56,7 +56,7 @@ char *pDeviceTypes[25] = {
   "connection",
   "crystalselector",
   "environment monitor",
-  "environment controller",
+  "environment_controller",
   "gpib",
   "hklscan",
   "hmcontrol",