diff --git a/src/fileformats.c b/src/fileformats.c
index 1ba09158..632c4fee 100644
--- a/src/fileformats.c
+++ b/src/fileformats.c
@@ -1765,6 +1765,8 @@ printf("%d x %d = %d   %d\n", tiny_width, tiny_height, tiny_width*tiny_height, s
           if ((context->Type == CONTEXT_PREVIEW || context->Type == CONTEXT_PREVIEW_PALETTE)
             && tiny_width > 0 && tiny_height > 0)
           {
+            context->Original_width = header.Width;
+            context->Original_height = header.Height;
             Pre_load(context, tiny_width, tiny_height,file_size,iff_format,ratio,bpp);
             context->Background_transparent = header.Mask == 2;
             context->Transparent_color = context->Background_transparent ? header.Transp_col : 0;
diff --git a/src/loadsave.c b/src/loadsave.c
index f9c18ece..69699856 100644
--- a/src/loadsave.c
+++ b/src/loadsave.c
@@ -426,18 +426,24 @@ void Pre_load(T_IO_Context *context, short width, short height, long file_size,
       context->Preview_bitmap=calloc(1, PREVIEW_WIDTH*PREVIEW_HEIGHT*Menu_factor_X*Menu_factor_Y);
       if (!context->Preview_bitmap)
         File_error=1;
-            
+
       // Affichage des données "Image size:"
-      if ((width<10000) && (height<10000))
+      memcpy(str, "VERY BIG!", 10); // default string
+      if (context->Original_width != 0)
+      {
+        if (context->Original_width < 10000 && context->Original_height < 10000)
+        {
+          Num2str(context->Original_width,str,4);
+          Num2str(context->Original_height,str+5,4);
+          str[4]='x';
+        }
+      }
+      else if ((width<10000) && (height<10000))
       {
         Num2str(width,str,4);
         Num2str(height,str+5,4);
         str[4]='x';
       }
-      else
-      {
-        memcpy(str, "VERY BIG!", 10);
-      }
       Print_in_window(101,59,str,MC_Black,MC_Light);
       snprintf(str, sizeof(str), "%2dbpp", bpp);
       Print_in_window(181,59,str,MC_Black,MC_Light);
diff --git a/src/loadsave.h b/src/loadsave.h
index c075f99b..8b7da37d 100644
--- a/src/loadsave.h
+++ b/src/loadsave.h
@@ -65,6 +65,8 @@ typedef struct
   T_Palette Palette;
   short Width;
   short Height;
+  short Original_width;   /// Size of the whole image in case of PREVIEW of a thumbnail
+  short Original_height;
   int  Nb_layers;
   char Comment[COMMENT_SIZE+1];
   byte Background_transparent;