diff --git a/app/src/main/cpp/GPIOControl.cpp b/app/src/main/cpp/GPIOControl.cpp
index 5d4c0321..db90c2e9 100644
--- a/app/src/main/cpp/GPIOControl.cpp
+++ b/app/src/main/cpp/GPIOControl.cpp
@@ -61,7 +61,7 @@ size_t GpioControl::turnOnImpl(const IOT_PARAM& param)
         SetCamerastatus(param.cmd, true);
     }
 
-    if (oldRef == 0)
+    if (oldRef == 0 || param.cmd != CMD_SET_3V3_PWR_EN)
     {
         fd = open(GPIO_NODE_MP, O_RDONLY);
         if( fd > 0 )