diff --git a/testing/scripts/diff-remove-mime-types b/testing/scripts/diff-remove-mime-types
index ec6b40a513..9bf49d0283 100755
--- a/testing/scripts/diff-remove-mime-types
+++ b/testing/scripts/diff-remove-mime-types
@@ -8,9 +8,9 @@ BEGIN { FS="\t"; OFS="\t"; type_col = -1; desc_col = -1 }
 /^#fields/ {
     for ( i = 2; i < NF; ++i )
         {
-        if ( $i == "mime_type" || $i == "file_type" )
+        if ( $i == "mime_type" )
             type_col = i-1;
-        if ( $i == "mime_desc" )
+        if ( $i == "mime_desc" || $i == "file_type" )
             desc_col = i-1;
         }
 }