diff --git a/include/multipass/constants.h b/include/multipass/constants.h
index a98f2cad4f..dc8e3261f7 100644
--- a/include/multipass/constants.h
+++ b/include/multipass/constants.h
@@ -24,7 +24,7 @@ constexpr auto client_name = "multipass";
 constexpr auto daemon_name = "multipassd";
 constexpr auto min_memory_size = "128M";
 constexpr auto min_disk_size = "512M";
-constexpr auto petenv_key = "client.primary_name"; // This will eventually be moved to some dynamic settings schema
+constexpr auto petenv_key = "client.primary-name"; // This will eventually be moved to some dynamic settings schema
 constexpr auto driver_key = "local.driver";        // idem
 constexpr auto driver_env_var = "MULTIPASS_VM_DRIVER";
 } // namespace multipass
diff --git a/tests/test_cli_client.cpp b/tests/test_cli_client.cpp
index 978af89d45..cab8489d21 100644
--- a/tests/test_cli_client.cpp
+++ b/tests/test_cli_client.cpp
@@ -1335,13 +1335,13 @@ TEST_F(Client, set_cmd_fails_with_no_arguments)
 TEST_F(Client, get_cmd_fails_with_multiple_arguments)
 {
     EXPECT_CALL(mock_settings, get(_)).Times(0);
-    EXPECT_THAT(send_command({"get", "client.primary_name", "local.driver"}), Eq(mp::ReturnCode::CommandLineError));
+    EXPECT_THAT(send_command({"get", "client.primary-name", "local.driver"}), Eq(mp::ReturnCode::CommandLineError));
 }
 
 TEST_F(Client, set_cmd_fails_with_multiple_arguments)
 {
     EXPECT_CALL(mock_settings, set(_, _)).Times(0);
-    EXPECT_THAT(send_command({"set", "client.primary_name=asdf", "local.driver=qemu"}),
+    EXPECT_THAT(send_command({"set", "client.primary-name=asdf", "local.driver=qemu"}),
                 Eq(mp::ReturnCode::CommandLineError));
 }