diff --git a/cmd/drone-server/server.go b/cmd/drone-server/server.go
index e4c3e9de1..c2d1cd2c2 100644
--- a/cmd/drone-server/server.go
+++ b/cmd/drone-server/server.go
@@ -526,18 +526,18 @@ func server(c *cli.Context) error {
 
 	// must configure the drone_host variable
 	if c.String("server-host") == "" {
-		logrus.Fatalln("DRONE_HOST is not properly configured")
+		logrus.Fatalln("DRONE_HOST/DRONE_SERVER_HOST is not properly configured")
 	}
 
 	if !strings.Contains(c.String("server-host"), "://") {
 		logrus.Fatalln(
-			"DRONE_HOST must be <scheme>://<hostname> format",
+			"DRONE_HOST/DRONE_SERVER_HOST must be <scheme>://<hostname> format",
 		)
 	}
 
 	if strings.HasSuffix(c.String("server-host"), "/") {
 		logrus.Fatalln(
-			"DRONE_HOST must not have trailing slash",
+			"DRONE_HOST/DRONE_SERVER_HOST must not have trailing slash",
 		)
 	}