diff --git a/services/sensorservice/SensorService.cpp b/services/sensorservice/SensorService.cpp
index 209eea5..62c2756 100644
--- a/services/sensorservice/SensorService.cpp
+++ b/services/sensorservice/SensorService.cpp
@@ -394,7 +394,7 @@
             }
         } else if (!mSensors.hasAnySensor()) {
             result.append("No Sensors on the device\n");
-            result.append("devInitCheck : %d\n", SensorDevice::getInstance().initCheck());
+            result.appendFormat("devInitCheck : %d\n", SensorDevice::getInstance().initCheck());
         } else {
             // Default dump the sensor list and debugging information.
             //