diff --git a/keywords.txt b/keywords.txt
index 2480751..845bdb3 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -50,5 +50,5 @@ inputRegisterWrite	KEYWORD2
 
 COILS	LITERAL1
 DISCRETE_INPUTS	LITERAL1
-HOLIDING_REGISTERS	LITERAL1
+HOLDING_REGISTERS	LITERAL1
 INPUT_REGISTERS	LITERAL1