diff --git a/app/src/main/java/org/ntlab/irisclient/MemberRoomActivity.java b/app/src/main/java/org/ntlab/irisclient/MemberRoomActivity.java
index 9cfcbc5..0dd0e65 100644
--- a/app/src/main/java/org/ntlab/irisclient/MemberRoomActivity.java
+++ b/app/src/main/java/org/ntlab/irisclient/MemberRoomActivity.java
@@ -128,6 +128,7 @@
             @Override
             public void onClick(View v) {
                 ((Iris) getApplication()).setMaster(true);
+                ((Iris) getApplication()).setTeam("r");
                 roomViewModel.changeBelongsAndMaster(roomId, myName,"r",true);
             }
         });
@@ -137,6 +138,7 @@
             @Override
             public void onClick(View v) {
                 ((Iris) getApplication()).setMaster(false);
+                ((Iris) getApplication()).setTeam("r");
                 roomViewModel.changeBelongsAndMaster(roomId, myName,"r",false);
             }
         });
@@ -146,6 +148,7 @@
             @Override
             public void onClick(View v) {
                 ((Iris) getApplication()).setMaster(true);
+                ((Iris) getApplication()).setTeam("b");
                 roomViewModel.changeBelongsAndMaster(roomId, myName,"b",true);
             }
         });
@@ -155,6 +158,7 @@
             @Override
             public void onClick(View v) {
                 ((Iris) getApplication()).setMaster(false);
+                ((Iris) getApplication()).setTeam("b");
                 roomViewModel.changeBelongsAndMaster(roomId, myName,"b",false);
             }
         });