diff --git a/script/cpython/image_functions.py b/script/cpython/image_functions.py
index 4e12689..6df00a7 100644
--- a/script/cpython/image_functions.py
+++ b/script/cpython/image_functions.py
@@ -21,5 +21,5 @@ def img_get_int(fname,  thres1, thres2, thres3, thres4, header, width, height, d
 def img_read(fname, header, width, height, depth):
     img = numpy.fromfile(fname, dtype=numpy.uint32)
     img.shape = height, width
-    return img.flatten()
+    return img.flatten('l')
     
\ No newline at end of file