diff --git a/base/applications/sndrec32/audio_format.cpp b/base/applications/sndrec32/audio_format.cpp
index 20fffc0e2de..7710dce9ea5 100644
--- a/base/applications/sndrec32/audio_format.cpp
+++ b/base/applications/sndrec32/audio_format.cpp
@@ -12,7 +12,7 @@ _AUDIO_NAMESPACE_START_
 
 /* Standard audio formats (declared as externs in `audio_format.hpp') */
 
-audio_format UNNKOWN_FORMAT(0, 0, 0);
+audio_format UNKNOWN_FORMAT(0, 0, 0);
 audio_format A44100_16BIT_STEREO(44100, 16, 2);
 audio_format A44100_16BIT_MONO(44100, 16, 1);
 
diff --git a/dll/win32/shell32/folders/CControlPanelFolder.cpp b/dll/win32/shell32/folders/CControlPanelFolder.cpp
index ff62b2e964f..be71cc8f714 100644
--- a/dll/win32/shell32/folders/CControlPanelFolder.cpp
+++ b/dll/win32/shell32/folders/CControlPanelFolder.cpp
@@ -411,7 +411,7 @@ HRESULT WINAPI CControlPanelFolder::GetAttributesOf(UINT cidl, PCUITEMID_CHILD_A
             else if (_ILIsSpecialFolder(*apidl))
                 m_regFolder->GetAttributesOf(1, apidl, rgfInOut);
             else
-                ERR("Got an unkown pidl here!\n");
+                ERR("Got an unknown pidl here!\n");
             apidl++;
             cidl--;
         }
diff --git a/dll/win32/shell32/folders/CDrivesFolder.cpp b/dll/win32/shell32/folders/CDrivesFolder.cpp
index 16b6b701f5b..8dbdc48779d 100644
--- a/dll/win32/shell32/folders/CDrivesFolder.cpp
+++ b/dll/win32/shell32/folders/CDrivesFolder.cpp
@@ -666,7 +666,7 @@ HRESULT WINAPI CDrivesFolder::ParseDisplayName(HWND hwndOwner, LPBC pbc, LPOLEST
             else if (_ILIsSpecialFolder(pidlTemp))
                 m_regFolder->GetAttributesOf(1, &pidlTemp, pdwAttributes);
             else
-                ERR("Got an unkown pidl here!\n");
+                ERR("Got an unknown pidl here!\n");
         }
     }
 
diff --git a/dll/win32/shell32/folders/CRegFolder.cpp b/dll/win32/shell32/folders/CRegFolder.cpp
index 464d00fe55b..eea529de235 100644
--- a/dll/win32/shell32/folders/CRegFolder.cpp
+++ b/dll/win32/shell32/folders/CRegFolder.cpp
@@ -510,7 +510,7 @@ HRESULT WINAPI CRegFolder::GetAttributesOf(UINT cidl, PCUITEMID_CHILD_ARRAY apid
         if (_ILIsSpecialFolder(*apidl))
             GetGuidItemAttributes(*apidl, rgfInOut);
         else
-            ERR("Got an unkown pidl here!\n");
+            ERR("Got an unknown pidl here!\n");
         apidl++;
         cidl--;
     }
diff --git a/hal/halx86/legacy/bussupp.c b/hal/halx86/legacy/bussupp.c
index 6f91c3b7280..d6d7c99d174 100644
--- a/hal/halx86/legacy/bussupp.c
+++ b/hal/halx86/legacy/bussupp.c
@@ -355,7 +355,7 @@ HalpAllocateAndInitPciBusHandler(IN ULONG PciType,
         default:
 
             /* Invalid type */
-            DbgPrint("HAL: Unnkown PCI type\n");
+            DbgPrint("HAL: Unknown PCI type\n");
     }
 
     /* Return the bus handler */
diff --git a/modules/rosapps/applications/sysutils/regexpl/RegistryKey.cpp b/modules/rosapps/applications/sysutils/regexpl/RegistryKey.cpp
index d3d6ec83483..483ef0a25f8 100644
--- a/modules/rosapps/applications/sysutils/regexpl/RegistryKey.cpp
+++ b/modules/rosapps/applications/sysutils/regexpl/RegistryKey.cpp
@@ -489,7 +489,7 @@ const TCHAR * CRegistryKey::GetValueTypeName(DWORD dwType)
 	case REG_RESOURCE_REQUIREMENTS_LIST:
 		return _T("REG_RESOURCE_REQUIREMENTS_LIST");
 	default:
-		return _T("Unkown Type");
+		return _T("Unknown Type");
 	}
 }