diff --git a/src/ArduinoIoTCloudDevice.cpp b/src/ArduinoIoTCloudDevice.cpp
index f72b65588..f6594e027 100644
--- a/src/ArduinoIoTCloudDevice.cpp
+++ b/src/ArduinoIoTCloudDevice.cpp
@@ -26,6 +26,8 @@ ArduinoCloudDevice::ArduinoCloudDevice(MessageStream *ms)
 : CloudProcess(ms),
 _state{State::Init},
 _attachAttempt(0, 0),
+_propertyContainer(),
+_propertyContainerIndex(0),
 _attached(false),
 _registered(false) {
 }
diff --git a/src/ArduinoIoTCloudThing.cpp b/src/ArduinoIoTCloudThing.cpp
index 6ea6dd904..d2f49119b 100644
--- a/src/ArduinoIoTCloudThing.cpp
+++ b/src/ArduinoIoTCloudThing.cpp
@@ -29,7 +29,7 @@ ArduinoCloudThing::ArduinoCloudThing(MessageStream* ms)
 : CloudProcess(ms),
 _state{State::Init},
 _syncAttempt(0, 0),
-_propertyContainer(0),
+_propertyContainer(),
 _propertyContainerIndex(0),
 _utcOffset(0),
 _utcOffsetProperty(nullptr),