diff --git a/ntoskrnl/ex/shutdown.c b/ntoskrnl/ex/shutdown.c
index 864f92c40da..012922e2da9 100644
--- a/ntoskrnl/ex/shutdown.c
+++ b/ntoskrnl/ex/shutdown.c
@@ -2,7 +2,7 @@
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
  * FILE:            ntoskrnl/ex/shutdown.c
- * PURPOSE:         Power managment
+ * PURPOSE:         Power management
  *
  * PROGRAMMERS:     David Welch (welch@cwcom.net)
  */
diff --git a/ntoskrnl/ke/i386/ldt.c b/ntoskrnl/ke/i386/ldt.c
index 3501712ffaf..50480410f72 100644
--- a/ntoskrnl/ke/i386/ldt.c
+++ b/ntoskrnl/ke/i386/ldt.c
@@ -2,7 +2,7 @@
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
  * FILE:            ntoskrnl/ke/i386/ldt.c
- * PURPOSE:         LDT managment
+ * PURPOSE:         LDT management
  *
  * PROGRAMMERS:     David Welch (welch@cwcom.net)
  *                  Stefan Ginsberg (stefan.ginsberg@reactos.org)
diff --git a/ntoskrnl/mm/amd64/procsup.c b/ntoskrnl/mm/amd64/procsup.c
index 4cde151fb9e..646c516b293 100644
--- a/ntoskrnl/mm/amd64/procsup.c
+++ b/ntoskrnl/mm/amd64/procsup.c
@@ -2,7 +2,7 @@
  * COPYRIGHT:       GPL, See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
  * FILE:            ntoskrnl/mm/amd64/procsup.c
- * PURPOSE:         Low level memory managment manipulation
+ * PURPOSE:         Low level memory management manipulation
  *
  * PROGRAMMER:      Timo Kreuzer (timo.kreuzer@reactos.org)
  *                  ReactOS Portable Systems Group
diff --git a/ntoskrnl/mm/balance.c b/ntoskrnl/mm/balance.c
index eb4c9fc8a05..0c9d34ce54f 100644
--- a/ntoskrnl/mm/balance.c
+++ b/ntoskrnl/mm/balance.c
@@ -2,7 +2,7 @@
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
  * FILE:            ntoskrnl/mm/balance.c
- * PURPOSE:         kernel memory managment functions
+ * PURPOSE:         kernel memory management functions
  *
  * PROGRAMMERS:     David Welch (welch@cwcom.net)
  *                  Cameron Gutman (cameron.gutman@reactos.org)
diff --git a/ntoskrnl/mm/i386/page.c b/ntoskrnl/mm/i386/page.c
index 791aeb93490..833c2e2c8d6 100644
--- a/ntoskrnl/mm/i386/page.c
+++ b/ntoskrnl/mm/i386/page.c
@@ -2,7 +2,7 @@
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
  * FILE:            ntoskrnl/mm/i386/page.c
- * PURPOSE:         Low level memory managment manipulation
+ * PURPOSE:         Low level memory management manipulation
  *
  * PROGRAMMERS:     David Welch (welch@cwcom.net)
  */
diff --git a/ntoskrnl/mm/i386/pagepae.c b/ntoskrnl/mm/i386/pagepae.c
index 42813ae16c6..e6616233fc9 100644
--- a/ntoskrnl/mm/i386/pagepae.c
+++ b/ntoskrnl/mm/i386/pagepae.c
@@ -2,7 +2,7 @@
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
  * FILE:            ntoskrnl/mm/i386/pagepae.c
- * PURPOSE:         Low level memory managment manipulation
+ * PURPOSE:         Low level memory management manipulation
  *
  * PROGRAMMERS:     David Welch (welch@cwcom.net)
  */
diff --git a/ntoskrnl/mm/mmfault.c b/ntoskrnl/mm/mmfault.c
index 410b2f558e8..82633916a16 100644
--- a/ntoskrnl/mm/mmfault.c
+++ b/ntoskrnl/mm/mmfault.c
@@ -2,7 +2,7 @@
  * COPYRIGHT:       See COPYING in the top directory
  * PROJECT:         ReactOS kernel
  * FILE:            ntoskrnl/mm/mmfault.c
- * PURPOSE:         Kernel memory managment functions
+ * PURPOSE:         Kernel memory management functions
  * PROGRAMMERS:     David Welch (welch@cwcom.net)
  */
 
diff --git a/ntoskrnl/mm/rmap.c b/ntoskrnl/mm/rmap.c
index 9c2f00eff22..3447bda81cd 100644
--- a/ntoskrnl/mm/rmap.c
+++ b/ntoskrnl/mm/rmap.c
@@ -2,7 +2,7 @@
  * COPYRIGHT:       See COPYING in the top directory
  * PROJECT:         ReactOS kernel
  * FILE:            ntoskrnl/mm/rmap.c
- * PURPOSE:         Kernel memory managment functions
+ * PURPOSE:         Kernel memory management functions
  *
  * PROGRAMMERS:     David Welch (welch@cwcom.net)
  */
diff --git a/sdk/lib/rtl/atom.c b/sdk/lib/rtl/atom.c
index a077b0d8c85..ed4af8e9078 100644
--- a/sdk/lib/rtl/atom.c
+++ b/sdk/lib/rtl/atom.c
@@ -2,7 +2,7 @@
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS system libraries
  * FILE:            lib/rtl/atom.c
- * PURPOSE:         Atom managment
+ * PURPOSE:         Atom management
  * PROGRAMMER:      Thomas Weidenmueller
  */
 
diff --git a/win32ss/include/ntgdihdl.h b/win32ss/include/ntgdihdl.h
index d03c06c216a..1938ff04b31 100644
--- a/win32ss/include/ntgdihdl.h
+++ b/win32ss/include/ntgdihdl.h
@@ -111,7 +111,7 @@
 #define GDI_OBJECT_GET_TYPE_INDEX(t) \
     ((t & GDI_HANDLE_BASETYPE_MASK) >> GDI_HANDLE_BASETYPE_SHIFT)
 
-/* Gdi Object Handle Managment Pid lock masking sets. */
+/* Gdi Object Handle Management Pid lock masking sets. */
 /* Ref: used with DxEngSetDCOwner */
 #define GDI_OBJ_HMGR_PUBLIC     0          /* Public owner, Open access? */
 #define GDI_OBJ_HMGR_POWNED     0x80000002 /* Set to current owner. */