diff --git a/nixos/modules/hardware/video/uvcvideo/default.nix b/nixos/modules/hardware/video/uvcvideo/default.nix
index 7e3e94fdf2bd..cf6aa052abb0 100644
--- a/nixos/modules/hardware/video/uvcvideo/default.nix
+++ b/nixos/modules/hardware/video/uvcvideo/default.nix
@@ -26,7 +26,7 @@ in
           Whether to enable <command>uvcvideo</command> dynamic controls.
 
           Note that enabling this brings the <command>uvcdynctrl</command> tool
-          into your environement and register all dynamic controls from
+          into your environment and register all dynamic controls from
           specified <command>packages</command> to the <command>uvcvideo</command> driver.
         '';
       };
diff --git a/nixos/modules/services/networking/skydns.nix b/nixos/modules/services/networking/skydns.nix
index e79d6de92644..ea466de93275 100644
--- a/nixos/modules/services/networking/skydns.nix
+++ b/nixos/modules/services/networking/skydns.nix
@@ -64,7 +64,7 @@ in {
     extraConfig = mkOption {
       default = {};
       type = types.attrsOf types.str;
-      description = "Skydns attribute set of extra config options passed as environemnt variables.";
+      description = "Skydns attribute set of extra config options passed as environment variables.";
     };
   };
 
diff --git a/pkgs/development/libraries/libpcap/default.nix b/pkgs/development/libraries/libpcap/default.nix
index fcb599e00f57..604fd3ee4465 100644
--- a/pkgs/development/libraries/libpcap/default.nix
+++ b/pkgs/development/libraries/libpcap/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
     ++ optionals withBluez [ bluez.dev pkgconfig ];
 
   # We need to force the autodetection because detection doesn't
-  # work in pure build enviroments.
+  # work in pure build environments.
   configureFlags = [
     ("--with-pcap=" + {
       linux = "linux";
diff --git a/pkgs/tools/graphics/lprof/keep-environment.patch b/pkgs/tools/graphics/lprof/keep-environment.patch
index 4dcb5b0448dd..7d0beaed587a 100644
--- a/pkgs/tools/graphics/lprof/keep-environment.patch
+++ b/pkgs/tools/graphics/lprof/keep-environment.patch
@@ -3,7 +3,7 @@
 @@ -22,12 +22,7 @@
  # opts.Add(BoolOption('qt-mt-lib', 'Flag used to set QT library to either qt-mt or qt. Value of 1 = qt-mt, 0 = qt.', 'yes'))
  
- # setup base environemnt 
+ # setup base environment 
 -env = Environment(
 -    ENV = {
 -      'PATH' : os.environ[ 'PATH' ],