diff --git a/reactos/drivers/bus/acpi/ospm/fdo.c b/reactos/drivers/bus/acpi/ospm/fdo.c
index 18923d73a4f..411206ba308 100644
--- a/reactos/drivers/bus/acpi/ospm/fdo.c
+++ b/reactos/drivers/bus/acpi/ospm/fdo.c
@@ -320,7 +320,6 @@ FdoQueryBusRelations(
   PFDO_DEVICE_EXTENSION DeviceExtension;
   PDEVICE_RELATIONS Relations;
   PLIST_ENTRY CurrentEntry;
-  ANSI_STRING AnsiString;
   ACPI_STATUS AcpiStatus;
   PACPI_DEVICE Device;
   NTSTATUS Status = STATUS_SUCCESS;
diff --git a/reactos/lib/dinput/keyboard.c b/reactos/lib/dinput/keyboard.c
index 08acc185ebf..b2ac08e3d60 100644
--- a/reactos/lib/dinput/keyboard.c
+++ b/reactos/lib/dinput/keyboard.c
@@ -99,10 +99,7 @@ void reactos_input_keyboard();
 
 void reactos_input_keyboard()
 {
-  MSG msg;
-  BOOL fDone;
   int disk_code = -1;
-  BOOL down;
   BYTE oldDInputKeyState[256];
   int t;
   
diff --git a/reactos/lib/dinput/mouse.c b/reactos/lib/dinput/mouse.c
index 104951c182b..c628dbb59d9 100644
--- a/reactos/lib/dinput/mouse.c
+++ b/reactos/lib/dinput/mouse.c
@@ -712,8 +712,6 @@ void getmousesvalue(LPDIRECTINPUTDEVICE8A iface);
 int filp=0;
 void getmousesvalue(LPDIRECTINPUTDEVICE8A iface)
 {
-	static long last_event = 0;
-
     POINT point;
 	SysMouseImpl *This = (SysMouseImpl *)iface;        
 
@@ -761,7 +759,6 @@ static HRESULT WINAPI SysMouseAImpl_Poll(LPDIRECTINPUTDEVICE8A iface)
 {
  int retValue = DI_OK;
  
-SysMouseImpl *This = (SysMouseImpl *)iface;           
  if (poll_mouse==0) {
 	                 retValue=SysMouseAImpl_Acquire(iface);	
                      poll_mouse=1; 
@@ -783,7 +780,6 @@ static HRESULT WINAPI SysMouseAImpl_GetDeviceState(
 	LPDIRECTINPUTDEVICE8A iface,DWORD len,LPVOID ptr
 ) {
     SysMouseImpl *This = (SysMouseImpl *)iface;        
-    POINT point;    	 
 
 #ifndef __REACTOS__
     EnterCriticalSection(&(This->crit));
diff --git a/reactos/lib/iphlpapi/ifenum_reactos.c b/reactos/lib/iphlpapi/ifenum_reactos.c
index 5a6c87091ec..fbd7ac4181f 100644
--- a/reactos/lib/iphlpapi/ifenum_reactos.c
+++ b/reactos/lib/iphlpapi/ifenum_reactos.c
@@ -367,20 +367,20 @@ static NTSTATUS getInterfaceInfoSet( HANDLE tcpFile,
                     DWORD numAddrs;
                     IPAddrEntry *addrs;
                     TDIEntityID ip_ent;
-                    int j,k;
+                    int j;
 
                     interfaceInfoComplete = FALSE;
 		    status = getNthIpEntity( tcpFile, 0, &ip_ent );
 		    if( NT_SUCCESS(status) )
 			status = tdiGetIpAddrsForIpEntity
 			    ( tcpFile, &ip_ent, &addrs, &numAddrs );
-		    for( k = 0; k < numAddrs && NT_SUCCESS(status); k++ ) {
-			DPRINT("ADDR %d: index %d (target %d)\n", k, addrs[k].iae_index, infoSetInt[curInterf].if_info.ent.if_index);
-			if( addrs[k].iae_index == 
+		    for( j = 0; j < numAddrs && NT_SUCCESS(status); j++ ) {
+			DPRINT("ADDR %d: index %d (target %d)\n", j, addrs[j].iae_index, infoSetInt[curInterf].if_info.ent.if_index);
+			if( addrs[j].iae_index == 
 			    infoSetInt[curInterf].if_info.ent.if_index ) {
 			    memcpy( &infoSetInt[curInterf].ip_addr,
-				    &addrs[k],
-				    sizeof( addrs[k] ) );
+				    &addrs[j],
+				    sizeof( addrs[j] ) );
 			    curInterf++;
 			    break;
 			}
@@ -847,7 +847,6 @@ NTSTATUS deleteIpAddress( ULONG NteContext )
 {
   HANDLE tcpFile;
   NTSTATUS status = openTcpFile( &tcpFile );
-  USHORT TheNteContext = NteContext;
   IO_STATUS_BLOCK Iosb;
 
   DPRINT("Called.\n");
diff --git a/reactos/lib/iphlpapi/resinfo_reactos.c b/reactos/lib/iphlpapi/resinfo_reactos.c
index 80e9f93c141..e159e5132ff 100644
--- a/reactos/lib/iphlpapi/resinfo_reactos.c
+++ b/reactos/lib/iphlpapi/resinfo_reactos.c
@@ -92,12 +92,10 @@ typedef VOID (*EnumInterfacesFunc)( HKEY ChildKeyHandle,
  */
 
 static void EnumInterfaces( PVOID Data, EnumInterfacesFunc cb ) {
-  HKEY RegHandle, TcpipHandle;
+  HKEY RegHandle;
   HKEY ChildKeyHandle = 0;
   PWCHAR RegKeyToEnumerate = 
       L"SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\\Interfaces";
-  PWCHAR RegKeyForTcpip = 
-      L"SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters";
   PWCHAR ChildKeyName = 0;
   DWORD CurrentInterface;
 
@@ -202,7 +200,7 @@ static void MakeNameServerList( PNAME_SERVER_LIST_PRIVATE PrivateData ) {
 }
 
 PIPHLP_RES_INFO getResInfo() {
-    DWORD result = ERROR_SUCCESS, dwSize, i, ServerCount, ExtraServer;
+    DWORD i, ServerCount, ExtraServer;
     HKEY hKey;
     LONG errCode;
     PWCHAR Str;
diff --git a/reactos/lib/shell32/shellpath.c b/reactos/lib/shell32/shellpath.c
index 72f358937b7..fa94e8c3540 100644
--- a/reactos/lib/shell32/shellpath.c
+++ b/reactos/lib/shell32/shellpath.c
@@ -1529,7 +1529,7 @@ static HRESULT _SHGetProfilesValue(HKEY profilesKey, LPCWSTR szValueName,
 static HRESULT _SHExpandEnvironmentStrings(LPCWSTR szSrc, LPWSTR szDest)
 {
     HRESULT hr = S_OK;
-    WCHAR szTemp[MAX_PATH], szProfilesPrefix[MAX_PATH] = { 0 };
+    WCHAR szTemp[MAX_PATH];
 
     TRACE("%s, %p\n", debugstr_w(szSrc), szDest);
 
diff --git a/reactos/lib/wininet/dialogs.c b/reactos/lib/wininet/dialogs.c
index d4a885ff6eb..ceaae44bd5a 100644
--- a/reactos/lib/wininet/dialogs.c
+++ b/reactos/lib/wininet/dialogs.c
@@ -135,10 +135,8 @@ static BOOL WININET_GetSetPassword( HWND hdlg, LPCWSTR szServer,
     WCHAR szResource[0x80], szUserPass[0x40];
     LPWSTR p;
     HWND hUserItem, hPassItem;
-    DWORD r, dwMagic = 19;
-    UINT r_len, u_len;
+    UINT r_len;
     WORD sz;
-    static const WCHAR szColon[] = { ':',0 };
     static const WCHAR szbs[] = { '/', 0 };
 
     hUserItem = GetDlgItem( hdlg, IDC_USERNAME );
@@ -158,6 +156,11 @@ static BOOL WININET_GetSetPassword( HWND hdlg, LPCWSTR szServer,
     if( bSet )
     {
 #ifndef __REACTOS__
+
+        DWORD r, dwMagic = 19;
+        UNIT u_len;
+        static const WCHAR szColon[] = { ':',0 };
+
         szUserPass[0] = 0;
         GetWindowTextW( hUserItem, szUserPass, 
                         (sizeof szUserPass-1)/sizeof(WCHAR) );
diff --git a/reactos/lib/winmm/lolvldrv.c b/reactos/lib/winmm/lolvldrv.c
index 335e15d8f39..a69cf56f10f 100644
--- a/reactos/lib/winmm/lolvldrv.c
+++ b/reactos/lib/winmm/lolvldrv.c
@@ -723,8 +723,6 @@ BOOL	MMDRV_Init(void)
     char	driver_buffer[256];
     char	mapper_buffer[256];
     char	midi_buffer[256];
-    char*	p1;
-    char*	p2;
     DWORD	type, size;
     BOOL	ret = FALSE;
     TRACE("()\n");
@@ -751,6 +749,9 @@ BOOL	MMDRV_Init(void)
     }
 
 #ifndef __REACTOS__
+    char*	p1;
+    char*	p2;
+
     p1 = driver_buffer;
     while (p1) {
         p2 = strchr(p1, ';');
diff --git a/reactos/subsys/system/calc/winecalc.c b/reactos/subsys/system/calc/winecalc.c
index cc046a59fc9..9c6aa4e4b13 100644
--- a/reactos/subsys/system/calc/winecalc.c
+++ b/reactos/subsys/system/calc/winecalc.c
@@ -639,7 +639,7 @@ LRESULT WINAPI MainProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
             break;
         default:
             {
-                int ret = parse(wParam, lParam);
+                parse(wParam, lParam);
             }
         } // switch WM_CHAR