diff --git a/src/Text/Pandoc/Extensions.hs b/src/Text/Pandoc/Extensions.hs
index a6b6739d4..1cb77bd6d 100644
--- a/src/Text/Pandoc/Extensions.hs
+++ b/src/Text/Pandoc/Extensions.hs
@@ -377,7 +377,6 @@ getDefaultExtensions "commonmark_x"    = extensionsFromList
   , Ext_emoji
   , Ext_pipe_tables
   , Ext_raw_html
-  , Ext_raw_tex            -- only supported in writer (for math)
   , Ext_smart
   , Ext_tex_math_dollars
   , Ext_superscript
@@ -513,7 +512,6 @@ getAllExtensions f = universalExtensions <> getAll f
     , Ext_task_lists
     , Ext_emoji
     , Ext_raw_html
-    , Ext_raw_tex            -- only supported in writer (for math)
     , Ext_implicit_figures
     , Ext_hard_line_breaks
     , Ext_smart