diff --git a/Sprinter/Configuration.h b/Sprinter/Configuration.h
index 0c90136..d5f5460 100644
--- a/Sprinter/Configuration.h
+++ b/Sprinter/Configuration.h
@@ -18,6 +18,7 @@
 // 2 is 200k thermistor
 // 3 is mendel-parts thermistor
 // 4 is 10k thermistor
+// 5 is ParCan supplied 104GT-2 100K
 #define THERMISTORHEATER 1
 #define THERMISTORBED 1