diff --git a/app/src/main/cpp/GPIOControl.cpp b/app/src/main/cpp/GPIOControl.cpp
index a4857242..0948611c 100644
--- a/app/src/main/cpp/GPIOControl.cpp
+++ b/app/src/main/cpp/GPIOControl.cpp
@@ -233,6 +233,7 @@ size_t GpioControl::TurnOffImmediately(int cmd)
                 it->references = 0;
                 SetCamerastatus(cmd, false);
                 setInt(it->cmd, 0);
+                it->openTime = 0;
             }
             break;
         }
@@ -276,6 +277,7 @@ size_t GpioControl::TurnOff(int cmd, uint32_t delayedCloseTime/* = 0*/)
                 {
                     SetCamerastatus(cmd, false);
                     setInt(it->cmd, 0);
+                    it->openTime = 0;
                 }
             }
             break;
@@ -323,6 +325,7 @@ size_t GpioControl::TurnOff(const std::vector<int>& cmds, uint32_t delayedCloseT
                     {
                         SetCamerastatus(it->cmd, false);
                         setInt(it->cmd, 0);
+                        it->openTime = 0;
                     }
                 }
                 break;
@@ -366,6 +369,7 @@ size_t GpioControl::TurnOff(const std::vector<std::pair<int, uint32_t> >& cmds)
                     {
                         SetCamerastatus(it->cmd, false);
                         setInt(it->cmd, 0);
+                        it->openTime = 0;
                     }
                 }
                 break;