diff --git a/src/mod_matrix_gw.erl b/src/mod_matrix_gw.erl
index f65131de2..d880d745e 100644
--- a/src/mod_matrix_gw.erl
+++ b/src/mod_matrix_gw.erl
@@ -24,7 +24,7 @@
 %%%----------------------------------------------------------------------
 
 -module(mod_matrix_gw).
--ifndef(OTP_BELOW_24).
+-ifndef(OTP_BELOW_25).
 
 -author('alexey@process-one.net').
 
@@ -883,7 +883,8 @@ mod_options(Host) ->
 
 mod_doc() ->
     #{desc =>
-          [?T("https://matrix.org/[Matrix] gateway.")],
+          [?T("https://matrix.org/[Matrix] gateway. "
+              "Erlang/OTP 25 or higher is required to use this module.")],
       note => "added in 24.02",
       example =>
 	  ["listen:",
diff --git a/src/mod_matrix_gw_room.erl b/src/mod_matrix_gw_room.erl
index aa054eb85..6ceff2141 100644
--- a/src/mod_matrix_gw_room.erl
+++ b/src/mod_matrix_gw_room.erl
@@ -24,7 +24,7 @@
 %%%-------------------------------------------------------------------
 -module(mod_matrix_gw_room).
 
--ifndef(OTP_BELOW_24).
+-ifndef(OTP_BELOW_25).
 -behaviour(gen_statem).
 
 %% API
diff --git a/src/mod_matrix_gw_s2s.erl b/src/mod_matrix_gw_s2s.erl
index 6caceb032..533f250c5 100644
--- a/src/mod_matrix_gw_s2s.erl
+++ b/src/mod_matrix_gw_s2s.erl
@@ -23,7 +23,7 @@
 %%%
 %%%-------------------------------------------------------------------
 -module(mod_matrix_gw_s2s).
--ifndef(OTP_BELOW_24).
+-ifndef(OTP_BELOW_25).
 -behaviour(gen_statem).
 
 %% API
diff --git a/src/mod_matrix_gw_sup.erl b/src/mod_matrix_gw_sup.erl
index b0c757a5c..f7730a266 100644
--- a/src/mod_matrix_gw_sup.erl
+++ b/src/mod_matrix_gw_sup.erl
@@ -20,7 +20,7 @@
 %%%
 %%%----------------------------------------------------------------------
 -module(mod_matrix_gw_sup).
--ifndef(OTP_BELOW_24).
+-ifndef(OTP_BELOW_25).
 -behaviour(supervisor).
 
 %% API