diff --git a/dll/win32/tapi32/assisted.c b/dll/win32/tapi32/assisted.c
index 57c24e81874..3ae4c7cac8c 100644
--- a/dll/win32/tapi32/assisted.c
+++ b/dll/win32/tapi32/assisted.c
@@ -19,9 +19,6 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
-#include "config.h"
-#include "wine/port.h"
-
 #include <stdarg.h>
 #include <stdio.h>
 #include "windef.h"
@@ -30,7 +27,6 @@
 #include "winreg.h"
 #include "objbase.h"
 #include "tapi.h"
-#include "wine/unicode.h"
 #include "wine/debug.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(tapi);
@@ -65,7 +61,7 @@ DWORD WINAPI tapiGetLocationInfoW(LPWSTR countrycode, LPWSTR citycode)
         if(!RegQueryValueExW(hkey, currentidW, 0, &type, (LPBYTE) &currid, &valsize) &&
            type == REG_DWORD) {
             /* find a subkey called Location1, Location2... */
-            sprintfW( szlockey, locationW, currid);
+            swprintf( szlockey, locationW, currid);
             if( !RegOpenKeyW( hkey, szlockey, &hsubkey)) {
                 if( citycode) {
                     bufsize=sizeof(buf);
@@ -79,7 +75,7 @@ DWORD WINAPI tapiGetLocationInfoW(LPWSTR countrycode, LPWSTR citycode)
                     bufsize=sizeof(buf);
                     if( !RegQueryValueExW( hsubkey, countryW, 0, &type, buf, &bufsize) &&
                         type == REG_DWORD)
-                        snprintfW( countrycode, 8, fmtW, *(LPDWORD) buf );
+                        swprintf( countrycode, fmtW, *(LPDWORD) buf );
                     else
                         countrycode[0] = '\0';
                 }
diff --git a/dll/win32/tapi32/line.c b/dll/win32/tapi32/line.c
index c0e25ba4d8a..17fecf36242 100644
--- a/dll/win32/tapi32/line.c
+++ b/dll/win32/tapi32/line.c
@@ -24,6 +24,7 @@
 #include <stdio.h>
 #include "windef.h"
 #include "winbase.h"
+#include "wine/winternl.h"
 #include "wingdi.h"
 #include "winreg.h"
 #include "winnls.h"
@@ -31,7 +32,6 @@
 #include "objbase.h"
 #include "tapi.h"
 #include "wine/debug.h"
-#include "wine/unicode.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(tapi);
 
@@ -538,7 +538,7 @@ DWORD WINAPI lineGetCountryW(DWORD id, DWORD version, LPLINECOUNTRYLIST list)
         HKEY hsubkey;
 
         if (RegEnumKeyW(hkey, i, subkey_name, max_subkey_len) != ERROR_SUCCESS) continue;
-        if (id && (atoiW(subkey_name) != id)) continue;
+        if (id && (wcstol(subkey_name, NULL, 10) != id)) continue;
         if (RegOpenKeyW(hkey, subkey_name, &hsubkey) != ERROR_SUCCESS) continue;
 
         RegQueryValueExW(hsubkey, international_ruleW, NULL, NULL, NULL, &size_int);
@@ -565,7 +565,7 @@ DWORD WINAPI lineGetCountryW(DWORD id, DWORD version, LPLINECOUNTRYLIST list)
         list->dwUsedSize += len + sizeof(LINECOUNTRYENTRY);
 
         if (id) i = 0;
-        entry[i].dwCountryID = atoiW(subkey_name);
+        entry[i].dwCountryID = wcstol(subkey_name, NULL, 10);
         size = sizeof(DWORD);
         RegQueryValueExW(hsubkey, country_codeW, NULL, NULL, (BYTE *)&entry[i].dwCountryCode, &size);
         entry[i].dwNextCountryID = 0;
@@ -845,7 +845,7 @@ DWORD WINAPI lineGetTranslateCapsA(HLINEAPP hLineApp, DWORD dwAPIVersion,
             == ERROR_SUCCESS){
         DWORD size_val;
         i++;
-        if( strncasecmp(loc_key_name, "location", 8)  ||
+        if( _strnicmp(loc_key_name, "location", 8)  ||
                 (RegOpenKeyA(hkLocations, loc_key_name, &hsubkey)
                  != ERROR_SUCCESS))
             continue;
@@ -907,7 +907,7 @@ DWORD WINAPI lineGetTranslateCapsA(HLINEAPP hLineApp, DWORD dwAPIVersion,
                     ERROR_SUCCESS){
                 DWORD size_val;
                 i++;
-                if( strncasecmp(card_key_name, "card", 4)  || ERROR_SUCCESS !=
+                if( _strnicmp(card_key_name, "card", 4)  || ERROR_SUCCESS !=
                         (RegOpenKeyA(hkCards, card_key_name, &hsubkey) ))
                     continue;
                 numcards++;
@@ -984,7 +984,7 @@ DWORD WINAPI lineGetTranslateCapsA(HLINEAPP hLineApp, DWORD dwAPIVersion,
             == ERROR_SUCCESS){
         DWORD size_val;
         i++;
-        if( strncasecmp(loc_key_name, "location", 8)  ||
+        if( _strnicmp(loc_key_name, "location", 8)  ||
                 (RegOpenKeyA(hkLocations, loc_key_name, &hsubkey)
                  != ERROR_SUCCESS))
             continue;
@@ -1077,7 +1077,7 @@ DWORD WINAPI lineGetTranslateCapsA(HLINEAPP hLineApp, DWORD dwAPIVersion,
                 ERROR_SUCCESS){
             DWORD size_val;
             i++;
-            if( strncasecmp(card_key_name, "card", 4)  ||
+            if( _strnicmp(card_key_name, "card", 4)  ||
                     (RegOpenKeyA(hkCards, card_key_name, &hsubkey) != ERROR_SUCCESS))
                 continue;
             size_val=sizeof(DWORD);
diff --git a/dll/win32/tapi32/precomp.h b/dll/win32/tapi32/precomp.h
index e51c67ba010..d057ccd4343 100644
--- a/dll/win32/tapi32/precomp.h
+++ b/dll/win32/tapi32/precomp.h
@@ -2,8 +2,6 @@
 #ifndef _TAPI32_PCH_
 #define _TAPI32_PCH_
 
-#include <wine/config.h>
-
 #include <stdarg.h>
 
 #define WIN32_NO_STATUS
@@ -13,10 +11,10 @@
 #include <windef.h>
 #include <winbase.h>
 #include <winreg.h>
+#include <winnls.h>
 #include <objbase.h>
 #include <tapi.h>
 
-#include <wine/unicode.h>
 #include <wine/debug.h>
 
 #endif /* !_TAPI32_PCH_ */
diff --git a/media/doc/README.WINE b/media/doc/README.WINE
index f74f8825b21..4d6dd61c7b3 100644
--- a/media/doc/README.WINE
+++ b/media/doc/README.WINE
@@ -184,7 +184,7 @@ dll/win32/stdole32.tlb        # Synced to WineStaging-3.3
 dll/win32/sti                 # Synced to WineStaging-4.18
 dll/win32/sxs                 # Synced to WineStaging-4.18
 dll/win32/t2embed             # Synced to WineStaging-4.18
-dll/win32/tapi32              # Synced to WineStaging-3.3
+dll/win32/tapi32              # Synced to WineStaging-4.18
 dll/win32/traffic             # Synced to WineStaging-3.3
 dll/win32/twain_32            # Synced to WineStaging-3.3
 dll/win32/updspapi            # Synced to WineStaging-3.3