diff --git a/maintainers/scripts/update.nix b/maintainers/scripts/update.nix
index 7435cf64425c..d881d68301ba 100755
--- a/maintainers/scripts/update.nix
+++ b/maintainers/scripts/update.nix
@@ -103,7 +103,7 @@ let
       pathContent = lib.attrByPath prefix null pkgs;
     in
       if pathContent == null then
-        builtins.throw "Attribute path `${path}` does not exists."
+        builtins.throw "Attribute path `${path}` does not exist."
       else
         packagesWithPath prefix (path: pkg: builtins.hasAttr "updateScript" pkg)
                        pathContent;
@@ -115,7 +115,7 @@ let
         package = lib.attrByPath (lib.splitString "." path) null pkgs;
     in
       if package == null then
-        builtins.throw "Package with an attribute name `${path}` does not exists."
+        builtins.throw "Package with an attribute name `${path}` does not exist."
       else if ! builtins.hasAttr "updateScript" package then
         builtins.throw "Package with an attribute name `${path}` does not have a `passthru.updateScript` attribute defined."
       else
diff --git a/nixos/modules/services/backup/znapzend.nix b/nixos/modules/services/backup/znapzend.nix
index debb2a397050..1fccc7cd6076 100644
--- a/nixos/modules/services/backup/znapzend.nix
+++ b/nixos/modules/services/backup/znapzend.nix
@@ -324,7 +324,7 @@ in
       autoCreation = mkOption {
         type = bool;
         default = false;
-        description = "Automatically create the destination dataset if it does not exists.";
+        description = "Automatically create the destination dataset if it does not exist.";
       };
 
       zetup = mkOption {
diff --git a/nixos/modules/services/monitoring/nagios.nix b/nixos/modules/services/monitoring/nagios.nix
index 0afaefe04e18..280a9a001b5b 100644
--- a/nixos/modules/services/monitoring/nagios.nix
+++ b/nixos/modules/services/monitoring/nagios.nix
@@ -41,7 +41,7 @@ let
     validated =  pkgs.runCommand "nagios-checked.cfg" {preferLocalBuild=true;} ''
       cp ${file} nagios.cfg
       # nagios checks the existence of /var/lib/nagios, but
-      # it does not exists in the build sandbox, so we fake it
+      # it does not exist in the build sandbox, so we fake it
       mkdir lib
       lib=$(readlink -f lib)
       sed -i s@=${nagiosState}@=$lib@ nagios.cfg
diff --git a/nixos/modules/services/networking/firefox/sync-server.nix b/nixos/modules/services/networking/firefox/sync-server.nix
index 24f768649530..1ad573abfca3 100644
--- a/nixos/modules/services/networking/firefox/sync-server.nix
+++ b/nixos/modules/services/networking/firefox/sync-server.nix
@@ -119,7 +119,7 @@ in
           password, and the <option>syncserver.secret</option> setting is used by the server to
           generate cryptographically-signed authentication tokens.
 
-          If this file does not exists, then it is created with a generated
+          If this file does not exist, then it is created with a generated
           <option>syncserver.secret</option> settings.
        '';
       };
diff --git a/pkgs/development/mobile/androidenv/emulate-app.nix b/pkgs/development/mobile/androidenv/emulate-app.nix
index 83be06a31419..ef803779ad64 100644
--- a/pkgs/development/mobile/androidenv/emulate-app.nix
+++ b/pkgs/development/mobile/androidenv/emulate-app.nix
@@ -67,7 +67,7 @@ stdenv.mkDerivation {
 
     export ANDROID_SERIAL="emulator-$port"
 
-    # Create a virtual android device for testing if it does not exists
+    # Create a virtual android device for testing if it does not exist
     ${sdk}/libexec/android-sdk/tools/bin/avdmanager list target
 
     if [ "$(${sdk}/libexec/android-sdk/tools/android list avd | grep 'Name: device')" = "" ]
diff --git a/pkgs/misc/vscode-extensions/updateSettings.nix b/pkgs/misc/vscode-extensions/updateSettings.nix
index c7fecf080720..443b40930279 100644
--- a/pkgs/misc/vscode-extensions/updateSettings.nix
+++ b/pkgs/misc/vscode-extensions/updateSettings.nix
@@ -6,7 +6,7 @@
 }:
 ##User Input
 { settings      ? {}
-# if marked as true will create an empty json file if does not exists
+# if marked as true will create an empty json file if does not exist
 , createIfDoesNotExists ? true
 , vscodeSettingsFile ? ".vscode/settings.json"
 , userSettingsFolder ? ""