diff --git a/src/cli/one_helper/oneimage_helper.rb b/src/cli/one_helper/oneimage_helper.rb
index 9628e4ed8b..a02ac25fe4 100644
--- a/src/cli/one_helper/oneimage_helper.rb
+++ b/src/cli/one_helper/oneimage_helper.rb
@@ -124,12 +124,9 @@ class OneImageHelper < OpenNebulaHelper::OneHelper
         {
             :name => "size",
             :large => "--size size",
-            :description => "Size in MB. Used for DATABLOCK type",
+            :description => "Size in MB. Used for DATABLOCK type or SOURCE based images.",
             :format => String,
             :proc => lambda do |o, options|
-                if !options[:type] || !(options[:type].upcase=='DATABLOCK')
-                    next [-1, "Size is only used for DATABLOCK type images"]
-                end
 
                 m=o.strip.match(/^(\d+(?:\.\d+)?)(m|mb|g|gb)?$/i)
 
diff --git a/src/image/ImageManagerActions.cc b/src/image/ImageManagerActions.cc
index ab6697b6e3..a067ac7c0c 100644
--- a/src/image/ImageManagerActions.cc
+++ b/src/image/ImageManagerActions.cc
@@ -770,7 +770,16 @@ int ImageManager::stat_image(Template*     img_tmpl,
 
             if (!res.empty())
             {
-                res = "0";
+                long long size_l;
+
+                if (!img_tmpl->get("SIZE", size_l))
+                {
+                    res = "Wrong number or missing SIZE attribute.";
+                    return -1;
+                }
+
+                img_tmpl->get("SIZE", res);
+
                 return 0;
             }
 
@@ -790,14 +799,16 @@ int ImageManager::stat_image(Template*     img_tmpl,
 
             if (res.empty())//no PATH
             {
-                img_tmpl->get("SIZE", res);
+                long long size_l;
 
-                if (res.empty())
+                if (!img_tmpl->get("SIZE", size_l))
                 {
-                    res = "Either SIZE or PATH are mandatory for DATABLOCK.";
+                    res = "Wrong number or missing SIZE attribute.";
                     return -1;
                 }
 
+                img_tmpl->get("SIZE", res);
+
                 return 0;
             }
             else