diff --git a/carbon/proto/carbon.proto b/carbon/proto/carbon.proto
index 681bf01..73a5b0e 100644
--- a/carbon/proto/carbon.proto
+++ b/carbon/proto/carbon.proto
@@ -17,7 +17,7 @@ message Project {
 	double tonnes = 3;
 }
 
-// Purchase 1K (0.001 tonne) of carbon offsets in a single request
+// Purchase 1KG (0.001 tonne) of carbon offsets in a single request
 message OffsetRequest {}
 
 message OffsetResponse {