diff --git a/Code/IO/otbTileMapImageIO.cxx b/Code/IO/otbTileMapImageIO.cxx
index 9081c7e617ac5ae3602917de5b412a970540b92a..4ee1ffe88ab948636f8fd72464574054a3f009fd 100644
--- a/Code/IO/otbTileMapImageIO.cxx
+++ b/Code/IO/otbTileMapImageIO.cxx
@@ -933,62 +933,62 @@ const std::string TileMapImageIO::ConvertDepthToScale(const unsigned int depth)
   switch (depth)
     {
       case 1:
-	return "1 : 222 million";
-	break;
+        return "1 : 222 million";
+        break;
       case 2:
-	return "1 : 111 million";
-	break;
+        return "1 : 111 million";
+        break;
       case 3:
-	return "1 : 55 million";
-	break;
+        return "1 : 55 million";
+        break;
       case 4:
-	return "1 : 28 million";
-	break;
+        return "1 : 28 million";
+        break;
       case 5:
-	return "1 : 14 million";
-	break;
+        return "1 : 14 million";
+        break;
       case 6:
-	return "1 : 7 million";
-	break;
+        return "1 : 7 million";
+        break;
       case 7:
-	return "1 : 3 million";
-	break;
+        return "1 : 3 million";
+        break;
       case 8:
-	return "1 : 2 million";
-	break;
+        return "1 : 2 million";
+        break;
       case 9:
-	return "1 : 867,000";
-	break;
+        return "1 : 867,000";
+        break;
       case 10:
-	return "1 : 433,000";
-	break;
+        return "1 : 433,000";
+        break;
       case 11:
-	return "1 : 217,000";
-	break;
+        return "1 : 217,000";
+        break;
       case 12:
-	return "1 : 108,000";
-	break;
+        return "1 : 108,000";
+        break;
       case 13:
-	return "1 : 54,000";
-	break;
+        return "1 : 54,000";
+        break;
       case 14:
-	return "1 : 27,000";
-	break;
+        return "1 : 27,000";
+        break;
       case 15:
-	return "1 : 14,000";
-	break;
+        return "1 : 14,000";
+        break;
       case 16:
-	return "1 : 6,771";
-	break;
+        return "1 : 6,771";
+        break;
       case 17:
-	return "1 : 3,385";
-	break;
+        return "1 : 3,385";
+        break;
       case 18:
-	return "1 : 1,693";
-	break;
+        return "1 : 1,693";
+        break;
       default:
-	return "1 : 222 million";
-	break;
+        return "1 : 222 million";
+        break;
     }
 
 }