diff --git a/modules/misc/assertions.nix b/modules/misc/assertions.nix
index 2b06bfbbc03..9cd58550adc 100644
--- a/modules/misc/assertions.nix
+++ b/modules/misc/assertions.nix
@@ -14,7 +14,7 @@ in
 
     assertions = mkOption {
       default = [];
-      example = [ { assertion = false; msg = "you can't enable this for that reason"; } ];
+      example = [ { assertion = false; message = "you can't enable this for that reason"; } ];
       merge = pkgs.lib.mergeListOption;
       description = ''
         This option allows modules to express conditions that must
diff --git a/modules/programs/ssh.nix b/modules/programs/ssh.nix
index 47ce581821d..5c4b8c3a9a1 100644
--- a/modules/programs/ssh.nix
+++ b/modules/programs/ssh.nix
@@ -35,7 +35,7 @@ in
   };
 
   assertions = [{ assertion = if cfg.forwardX11 then cfg.setXAuthLocation else true; 
-                  msg = "cannot enable X11 forwarding without setting xauth location";}];
+                  message = "cannot enable X11 forwarding without setting xauth location";}];
 
   config = {
     environment.etc =
diff --git a/modules/services/networking/ssh/sshd.nix b/modules/services/networking/ssh/sshd.nix
index 715aaa3f882..f7d2f5c9c87 100644
--- a/modules/services/networking/ssh/sshd.nix
+++ b/modules/services/networking/ssh/sshd.nix
@@ -302,7 +302,7 @@ in
       '';
 
     assertions = [{ assertion = if cfg.forwardX11 then cfgc.setXAuthLocation else true; 
-                    msg = "cannot enable X11 forwarding without setting xauth location";}];
+                    message = "cannot enable X11 forwarding without setting xauth location";}];
   };
 
 }