diff --git a/src/tests/definition.h b/src/tests/definition.h
index b498ecb..ea39e0a 100644
--- a/src/tests/definition.h
+++ b/src/tests/definition.h
@@ -24,7 +24,7 @@
 #define RADIO_PA_LEVEL RF24_PA_MAX
 #define RADIO_DATARATE RF24_250KBPS
 
-//Seep config part
+//Sleep config part : in 4 second increments ie : 1 corresponds to 4s of sleep, and 15 correponds to 60 seconds of sleep. 
 #define SLEEP_4_SEC_INTERVAL 1//15
 
 //Pin config part