diff --git a/config.h.dist b/config.h.dist
index a1ea657..a257d21 100644
--- a/config.h.dist
+++ b/config.h.dist
@@ -40,6 +40,8 @@
 /*
 	Values depending on the capabilities of your stepper motors and other mechanics.
 		All numbers are integers, no decimals allowed.
+
+		Units are mm/min
 */
 
 // used for G0 rapid moves and as a cap for all other feedrates