diff --git a/cmd/crt.go b/cmd/crt.go
index d024aae..fc54fcc 100644
--- a/cmd/crt.go
+++ b/cmd/crt.go
@@ -61,13 +61,13 @@ func crt(cmd *cobra.Command, args []string) {
 
 // crtCmd represents the crt command
 var crtCmd = &cobra.Command{
-	Use:   "crt -r R R [R ...] -m M M [M ...]",
+	Use:   "crt -r R,R,[R, ...] -m M,M,[M, ...]",
 	Short: "Solve a system of linear congruences with the Chinese remainder theorem",
 	Long: `Solve a system of linear congruences by applying the Chinese remainder theorem.
 
 To use, provide the remainder R of each congruence, along with the corresponding modulus M for each congruence. For instance,
 
-mathtools crt -r 2 3 2 -m 3 5 7
+mathtools crt -r 2,3,2 -m 3,5,7
 
 will solve the system of congruences
 x = 2 (mod 3)