diff --git a/src/pymodaq_plugins_andor/daq_viewer_plugins/plugins_2D/daq_2Dviewer_AndorCCD.py b/src/pymodaq_plugins_andor/daq_viewer_plugins/plugins_2D/daq_2Dviewer_AndorCCD.py
index d35074f..3e78d11 100644
--- a/src/pymodaq_plugins_andor/daq_viewer_plugins/plugins_2D/daq_2Dviewer_AndorCCD.py
+++ b/src/pymodaq_plugins_andor/daq_viewer_plugins/plugins_2D/daq_2Dviewer_AndorCCD.py
@@ -483,7 +483,7 @@ def prepare_data(self):
 
         # %%%%%% Initialize data: self.data for the memory to store new data and self.data_average to store the average data
         image_size = sizex * sizey
-        self.data = np.zeros((image_size,), dtype=int)
+        self.data = np.zeros((image_size,), dtype=np.uint32)
         self.data_pointer = self.data.ctypes.data_as(ctypes.c_void_p)
 
         data_shape = 'Data2D' if sizey != 1 else 'Data1D'