diff --git a/pkg/slack/slackstyle/style.go b/pkg/slack/slackstyle/style.go
index 1f3fca63e..46914aa8e 100644
--- a/pkg/slack/slackstyle/style.go
+++ b/pkg/slack/slackstyle/style.go
@@ -1,8 +1,14 @@
 package slackstyle
 
+// Green is the green hex color
 const Green = "#228B22"
+
+// Red is the red hex color
 const Red = "#800000"
 
+// TrendIcon returns the slack emoji of trends
+// 1: uptrend
+// -1: downtrend
 func TrendIcon(trend int) string {
 	if trend < 0 {
 		return ":chart_with_downwards_trend:"