diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 1afa5115..bc5a1cca 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -3188,7 +3188,7 @@ void payload_OK_only()
       {
 //        Serial1.print("START_FLAGOK BME280 0.0 0.0 0.0 0.0");
         Serial1.print(start_flag);
-        Serial1.print("OK BME280 0.0 0.0 0.0 0.0"");	      
+        Serial1.print("OK BME280 0.0 0.0 0.0 0.0");	      
       }
       if (mpuPresent) 	 {     
       mpu6050.update();