diff --git a/cmd/pin.go b/cmd/pin.go
index 9c6ed2b..fc2b344 100644
--- a/cmd/pin.go
+++ b/cmd/pin.go
@@ -40,6 +40,11 @@ var pinCmd = &cobra.Command{
 			envs, err := utils.GetEnvironments(dbProject.ID)
 			utils.StopIfErr(err)
 
+			if len(envs) == 1 {
+				utils.ErrPrint("The current environment is already pinned.")
+				os.Exit(1)
+			}
+
 			form := huh.NewForm(
 				huh.NewGroup(
 					huh.NewSelect[string]().