diff --git a/libraries/AP_ADC/keywords.txt b/libraries/AP_ADC/keywords.txt
index c8851040ec..c82cb5d786 100644
--- a/libraries/AP_ADC/keywords.txt
+++ b/libraries/AP_ADC/keywords.txt
@@ -1,3 +1,3 @@
-APM_ADC	KEYWORD1
-Init	KEYWORD2
-Ch	KEYWORD2
+APM_ADC	KEYWORD1
+Init	KEYWORD2
+Ch	KEYWORD2