diff --git a/scripts/librem5-devkit-flash-image b/scripts/librem5-devkit-flash-image
index 9d2f26b4ab95b0a07e895fd0a445e8e73623e22e..79bba364e47834bf9d3f7a5f34350a9121f30f7b 100755
--- a/scripts/librem5-devkit-flash-image
+++ b/scripts/librem5-devkit-flash-image
@@ -68,6 +68,12 @@ def verify_image(image, meta):
     size = int(meta['image']['size'])
     hexdigest = meta['image']['sha256sum']
 
+    filesize = os.path.getsize(image)
+    if filesize != size:
+        raise VerifyImageException(
+            "Image file \"{}\" size {} does not match {}".format(
+                os.path.basename(image), filesize, size))
+
     logging.info("Calculating sha256sum of {}".format(image))
     bar = tqdm.tqdm(total=size,
                     desc='Checking',