diff --git a/sat/tools/images.py b/sat/tools/images.py
index 5c66b775..4cd4ffc3 100644
--- a/sat/tools/images.py
+++ b/sat/tools/images.py
@@ -50,7 +50,7 @@ def checkImage(host, path, context=C.CONTEXT_CHAT):
                 factor = max_size[1] / image.size[1]
         else:
             factor = max_size[1] / image.size[1]
-        report['recommended_size'] = [image.width*factor, image.height*factor]
+        report['recommended_size'] = [int(image.width*factor), int(image.height*factor)]
     else:
         report['too_large'] = False