diff --git a/pkgs/os-specific/linux/kernel/linux-2.6.39.nix b/pkgs/os-specific/linux/kernel/linux-2.6.39.nix
index 64aa288c8c8e..001486f5ba51 100644
--- a/pkgs/os-specific/linux/kernel/linux-2.6.39.nix
+++ b/pkgs/os-specific/linux/kernel/linux-2.6.39.nix
@@ -5,7 +5,7 @@ args @ { stdenv, fetchurl, userModeLinux ? false, extraConfig ? ""
 let
   configWithPlatform = kernelPlatform :
     ''
-      # powermanagement and debugging for powertop
+      # Power management and debugging for powertop.
       DEBUG_KERNEL y
       PM_ADVANCED_DEBUG y
       PM_RUNTIME y
diff --git a/pkgs/os-specific/linux/kernel/linux-3.0.nix b/pkgs/os-specific/linux/kernel/linux-3.0.nix
index 9325b15a6c4b..d207b2c8b816 100644
--- a/pkgs/os-specific/linux/kernel/linux-3.0.nix
+++ b/pkgs/os-specific/linux/kernel/linux-3.0.nix
@@ -5,7 +5,7 @@ args @ { stdenv, fetchurl, userModeLinux ? false, extraConfig ? ""
 let
   configWithPlatform = kernelPlatform :
     ''
-      # powermanagement and debugging for powertop
+      # Power management and debugging for powertop.
       DEBUG_KERNEL y
       PM_ADVANCED_DEBUG y
       PM_RUNTIME y
diff --git a/pkgs/os-specific/linux/kernel/linux-3.1.nix b/pkgs/os-specific/linux/kernel/linux-3.1.nix
index 9321bbdd479b..9b3af8766997 100644
--- a/pkgs/os-specific/linux/kernel/linux-3.1.nix
+++ b/pkgs/os-specific/linux/kernel/linux-3.1.nix
@@ -5,7 +5,7 @@ args @ { stdenv, fetchurl, userModeLinux ? false, extraConfig ? ""
 let
   configWithPlatform = kernelPlatform :
     ''
-      # powermanagement and debugging for powertop
+      # Power management and debugging for powertop.
       DEBUG_KERNEL y
       PM_ADVANCED_DEBUG y
       PM_RUNTIME y
diff --git a/pkgs/os-specific/linux/kernel/linux-3.2.nix b/pkgs/os-specific/linux/kernel/linux-3.2.nix
index 19716169d6d1..faf79891dbb6 100644
--- a/pkgs/os-specific/linux/kernel/linux-3.2.nix
+++ b/pkgs/os-specific/linux/kernel/linux-3.2.nix
@@ -5,7 +5,7 @@ args @ { stdenv, fetchurl, userModeLinux ? false, extraConfig ? ""
 let
   configWithPlatform = kernelPlatform :
     ''
-      # powermanagement and debugging for powertop
+      # Power management and debugging for powertop.
       DEBUG_KERNEL y
       PM_ADVANCED_DEBUG y
       PM_RUNTIME y
diff --git a/pkgs/os-specific/linux/kernel/linux-3.3.nix b/pkgs/os-specific/linux/kernel/linux-3.3.nix
index b6c74b79b836..ce0deff3839b 100644
--- a/pkgs/os-specific/linux/kernel/linux-3.3.nix
+++ b/pkgs/os-specific/linux/kernel/linux-3.3.nix
@@ -5,7 +5,7 @@ args @ { stdenv, fetchurl, userModeLinux ? false, extraConfig ? ""
 let
   configWithPlatform = kernelPlatform :
     ''
-      # powermanagement and debugging for powertop
+      # Power management and debugging for powertop.
       DEBUG_KERNEL y
       PM_ADVANCED_DEBUG y
       PM_RUNTIME y
diff --git a/pkgs/os-specific/linux/kernel/linux-3.4.nix b/pkgs/os-specific/linux/kernel/linux-3.4.nix
index 191508af750e..8a2e8a4d9950 100644
--- a/pkgs/os-specific/linux/kernel/linux-3.4.nix
+++ b/pkgs/os-specific/linux/kernel/linux-3.4.nix
@@ -5,7 +5,7 @@ args @ { stdenv, fetchurl, userModeLinux ? false, extraConfig ? ""
 let
   configWithPlatform = kernelPlatform :
     ''
-      # powermanagement and debugging for powertop
+      # Power management and debugging for powertop.
       DEBUG_KERNEL y
       PM_ADVANCED_DEBUG y
       PM_RUNTIME y