diff --git a/src/client.odin b/src/client.odin
index 740e0bb..c30d8d3 100644
--- a/src/client.odin
+++ b/src/client.odin
@@ -1,9 +1,15 @@
 package hanabi
 
+import "core:fmt"
 import "core:net"
 import "core:os"
 
 main :: proc() {
+	if (len(os.args) == 1 || len(os.args) > 2) {
+		panic("usage: <addr:ip>")
+	}
+
 	sock, dial_err := net.dial_tcp(os.args[1])
+	if dial_err != nil do panic(fmt.tprintln("failed to dial", os.args[1]))
 }
 
diff --git a/src/server.odin b/src/server.odin
index 41d1c09..ac7cbed 100644
--- a/src/server.odin
+++ b/src/server.odin
@@ -32,14 +32,12 @@ create_comm_world :: proc(addresses: []string) -> (comm: Comm_World) {
 }
 
 main :: proc() {
-	game := create_game(8, 3, 3)
-	print_game(game)
-
-	if len(os.args) > 1 {
-		comm := create_comm_world(os.args[1:])
-		fmt.println(comm.sockets)
-	} else {
-		fmt.eprintln("usage: <player 1 addr:port> <p2> [p3] [p4] [p5]")
+	if len(os.args) == 1 {
+		panic(fmt.tprintln("usage: <player 1 addr:port> <p2> [p3] [p4] [p5]"))
 	}
+	game := create_game(8, 3, u8(len(os.args) - 1))
+	print_game(game)
+	comm := create_comm_world(os.args[1:])
+	fmt.println(comm.sockets)
 }