diff --git a/dlls/advapi32/security.c b/dlls/advapi32/security.c
index 4e815170679..7ee6161ad4d 100644
--- a/dlls/advapi32/security.c
+++ b/dlls/advapi32/security.c
@@ -2669,6 +2669,7 @@ static BOOL ParseStringSecurityDescriptorToSecurityDescriptor(
     WCHAR tok[MAX_PATH];
     LPCWSTR lptoken;
     LPBYTE lpNext = NULL;
+    DWORD len;
 
     *cBytes = 0;
 
@@ -2696,7 +2697,9 @@ static BOOL ParseStringSecurityDescriptorToSecurityDescriptor(
 	if (*lptoken)
             lptoken--;
 
-	strncpyW(tok, StringSecurityDescriptor, lptoken - StringSecurityDescriptor);
+        len = lptoken - StringSecurityDescriptor;
+        memcpy( tok, StringSecurityDescriptor, len * sizeof(WCHAR) );
+        tok[len] = 0;
 
         switch (toktype)
 	{
diff --git a/dlls/ntdll/time.c b/dlls/ntdll/time.c
index 377d19ac646..9edc4de634b 100644
--- a/dlls/ntdll/time.c
+++ b/dlls/ntdll/time.c
@@ -866,10 +866,12 @@ static int TIME_GetTimeZoneInfoFromReg(LPTIME_ZONE_INFORMATION tzinfo)
         RtlInitUnicodeString( &nameW, valkey );\
         if (!NtQueryValueKey( hkey, &nameW, KeyValuePartialInformation, KpInfo,\
                     sizeof(buf), &size )) { \
-            strncpyW( tofield, (WCHAR*) KpInfo->Data, \
-                    sizeof( tofield) / sizeof(WCHAR) ); \
+            size_t len = (strlenW( (WCHAR*)KpInfo->Data ) + 1) * sizeof(WCHAR); \
+            if (len > sizeof(tofield)) len = sizeof(tofield); \
+            memcpy( tofield, KpInfo->Data, len ); \
+            tofield[(len/sizeof(WCHAR))-1] = 0; \
         }
-        
+
         GTZIFR_N( TZStandardStartW,  tzinfo->StandardDate)
         GTZIFR_N( TZDaylightStartW,  tzinfo->DaylightDate)
         GTZIFR_N( TZBiasW,          tzinfo->Bias)
diff --git a/dlls/ntdll/wcstring.c b/dlls/ntdll/wcstring.c
index be364ec7752..93ba2b6eeb3 100644
--- a/dlls/ntdll/wcstring.c
+++ b/dlls/ntdll/wcstring.c
@@ -182,7 +182,10 @@ INT __cdecl NTDLL_wcsncmp( LPCWSTR str1, LPCWSTR str2, INT n )
  */
 LPWSTR __cdecl NTDLL_wcsncpy( LPWSTR s1, LPCWSTR s2, INT n )
 {
-    return strncpyW( s1, s2, n );
+    WCHAR *ret = s1;
+    while (n-- > 0) if (!(*s1++ = *s2++)) break;
+    while (n-- > 0) *s1++ = 0;
+    return ret;
 }
 
 
diff --git a/dlls/wininet/ftp.c b/dlls/wininet/ftp.c
index 2e777c856b9..3ed3f9d5efe 100644
--- a/dlls/wininet/ftp.c
+++ b/dlls/wininet/ftp.c
@@ -864,8 +864,7 @@ BOOL WINAPI FTP_FtpGetCurrentDirectoryW(LPWININETFTPSESSIONW lpwfs, LPWSTR lpszC
             }
 
             len = lastpos - firstpos - 1;
-            strncpyW(lpszCurrentDirectory, &lpszResponseBuffer[firstpos+1],
-                len < *lpdwCurrentDirectory ? len : *lpdwCurrentDirectory);
+            lstrcpynW(lpszCurrentDirectory, &lpszResponseBuffer[firstpos+1], *lpdwCurrentDirectory);
             HeapFree(GetProcessHeap(), 0, lpszResponseBuffer);
             *lpdwCurrentDirectory = len;
             bSuccess = TRUE;
diff --git a/dlls/wininet/utility.c b/dlls/wininet/utility.c
index ea7cdf49c45..3810ba7e0b3 100644
--- a/dlls/wininet/utility.c
+++ b/dlls/wininet/utility.c
@@ -53,15 +53,12 @@ time_t ConvertTimeString(LPCWSTR asctime)
     if(!asctime || !timelen)
         return 0;
 
-    /* The atoiWs below relie on that tmpChar is \0 padded? */
-    strncpyW(tmpChar, asctime, TIME_STRING_LEN);
+    /* FIXME: the atoiWs below rely on that tmpChar is \0 padded */
+    memset( tmpChar, 0, sizeof(tmpChar) );
+    lstrcpynW(tmpChar, asctime, TIME_STRING_LEN);
 
     /* Assert that the string is the expected length */
-    if (tmpChar[TIME_STRING_LEN - 1] != '\0')
-    {
-        tmpChar[TIME_STRING_LEN - 1] = '\0';
-        FIXME("\n");
-    }
+    if (strlenW(asctime) >= TIME_STRING_LEN) FIXME("\n");
 
     /* Convert a time such as 'Mon, 15 Nov 1999 16:09:35 GMT' into a SYSTEMTIME structure
      * We assume the time is in this format
diff --git a/include/wine/unicode.h b/include/wine/unicode.h
index ce3f8d71241..57abd0c4315 100644
--- a/include/wine/unicode.h
+++ b/include/wine/unicode.h
@@ -204,14 +204,6 @@ static inline int strncmpW( const WCHAR *str1, const WCHAR *str2, int n )
     return *str1 - *str2;
 }
 
-static inline WCHAR *strncpyW( WCHAR *str1, const WCHAR *str2, int n )
-{
-    WCHAR *ret = str1;
-    while (n-- > 0) if (!(*str1++ = *str2++)) break;
-    while (n-- > 0) *str1++ = 0;
-    return ret;
-}
-
 static inline WCHAR *strcatW( WCHAR *dst, const WCHAR *src )
 {
     strcpyW( dst + strlenW(dst), src );