diff --git a/Ras_sub/ras_sub.cpp b/Ras_sub/ras_sub.cpp
index bef817cb28a4c149f4fe7f8b11256d8c92a2e5dd..8c4a387612223b94931ea37cc1ff8c8ef7e5a77d 100644
--- a/Ras_sub/ras_sub.cpp
+++ b/Ras_sub/ras_sub.cpp
@@ -77,7 +77,7 @@ int setup();
 string charstoString(char word);
 double stringToDouble(string _str);
 string* StringSplit(string strTarget, string strTok);
-void imCom();
+void viCom();
 void bluetoothCom();
 void senddata(int type, string number, string message);
 void gestureCom();
@@ -97,7 +97,7 @@ int main()
 		return 0;
     
     //start process
-	thread t1(&imCom);
+	thread t1(&viCom);
 	thread t2(&bluetoothCom);
 	thread t3(&gestureCom);
 	thread t4(&accCom);
@@ -387,7 +387,7 @@ string* StringSplit(string strTarget, string strTok)
 }
 
 
-void imCom()
+void viCom()
 {
     //vibration to ras_sub communication
 	while(check)