diff --git a/dlls/wininet/ftp.c b/dlls/wininet/ftp.c
index 56fade1e8b2..e8a31b46885 100644
--- a/dlls/wininet/ftp.c
+++ b/dlls/wininet/ftp.c
@@ -1193,6 +1193,8 @@ static void AsyncFtpGetFileProc(WORKREQUEST *workRequest)
     HeapFree(GetProcessHeap(), 0, req->lpszNewFile);
 }
 
+#define FTP_CONDITION_MASK      0x0007
+
 BOOL WINAPI FtpGetFileW(HINTERNET hInternet, LPCWSTR lpszRemoteFile, LPCWSTR lpszNewFile,
     BOOL fFailIfExists, DWORD dwLocalFlagsAttribute, DWORD dwInternetFlags,
     DWORD dwContext)
@@ -1201,13 +1203,35 @@ BOOL WINAPI FtpGetFileW(HINTERNET hInternet, LPCWSTR lpszRemoteFile, LPCWSTR lps
     LPWININETAPPINFOW hIC = NULL;
     BOOL r = FALSE;
 
+    if (!lpszRemoteFile || !lpszNewFile)
+    {
+        INTERNET_SetLastError(ERROR_INVALID_PARAMETER);
+        return FALSE;
+    }
+
     lpwfs = (LPWININETFTPSESSIONW) WININET_GetObject( hInternet );
-    if (NULL == lpwfs || WH_HFTPSESSION != lpwfs->hdr.htype)
+    if (!lpwfs)
+    {
+        INTERNET_SetLastError(ERROR_INVALID_HANDLE);
+        return FALSE;
+    }
+
+    if (WH_HFTPSESSION != lpwfs->hdr.htype)
     {
         INTERNET_SetLastError(ERROR_INTERNET_INCORRECT_HANDLE_TYPE);
         goto lend;
     }
 
+    /* Testing shows that Windows only accepts dwInternetFlags where the last
+     * 3 (yes 3) bits define FTP_TRANSFER_TYPE_UNKNOWN, FTP_TRANSFER_TYPE_ASCII or FTP_TRANSFER_TYPE_BINARY.
+     */
+
+    if ((dwInternetFlags & FTP_CONDITION_MASK) > FTP_TRANSFER_TYPE_BINARY)
+    {
+        INTERNET_SetLastError(ERROR_INVALID_PARAMETER);
+        goto lend;
+    }
+
     if (lpwfs->download_in_progress != NULL) {
 	INTERNET_SetLastError(ERROR_FTP_TRANSFER_IN_PROGRESS);
         goto lend;
@@ -1238,8 +1262,7 @@ BOOL WINAPI FtpGetFileW(HINTERNET hInternet, LPCWSTR lpszRemoteFile, LPCWSTR lps
     }
 
 lend:
-    if( lpwfs )
-        WININET_Release( &lpwfs->hdr );
+    WININET_Release( &lpwfs->hdr );
 
     return r;
 }
diff --git a/dlls/wininet/tests/ftp.c b/dlls/wininet/tests/ftp.c
index ae33560a48e..43be9428719 100644
--- a/dlls/wininet/tests/ftp.c
+++ b/dlls/wininet/tests/ftp.c
@@ -249,7 +249,6 @@ static void test_getfile(void)
     SetLastError(0xdeadbeef);
     bRet = FtpGetFileA(NULL, NULL, "should_be_non_existing_deadbeef", FALSE, FILE_ATTRIBUTE_NORMAL, FTP_TRANSFER_TYPE_UNKNOWN, 0);
     ok ( bRet == FALSE, "Expected FtpGetFileA to fail\n");
-    todo_wine
     ok ( GetLastError() == ERROR_INVALID_PARAMETER,
         "Expected ERROR_INVALID_PARAMETER, got %d\n", GetLastError());
 
@@ -257,7 +256,6 @@ static void test_getfile(void)
     SetLastError(0xdeadbeef);
     bRet = FtpGetFileA(NULL, "welcome.msg", "should_be_non_existing_deadbeef", FALSE, FILE_ATTRIBUTE_NORMAL, 5, 0);
     ok ( bRet == FALSE, "Expected FtpGetFileA to fail\n");
-    todo_wine
     ok ( GetLastError() == ERROR_INVALID_HANDLE,
         "Expected ERROR_INVALID_HANDLE, got %d\n", GetLastError());
 
@@ -281,21 +279,16 @@ static void test_getfile(void)
     SetLastError(0xdeadbeef);
     bRet = FtpGetFileA(hFtp, NULL, "should_be_non_existing_deadbeef", FALSE, FILE_ATTRIBUTE_NORMAL, FTP_TRANSFER_TYPE_UNKNOWN, 0);
     ok ( bRet == FALSE, "Expected FtpGetFileA to fail\n");
-    todo_wine
-    {
     ok ( GetLastError() == ERROR_INVALID_PARAMETER,
         "Expected ERROR_INVALID_PARAMETER, got %d\n", GetLastError());
-    /* Currently Wine always creates the local file (even on failure) which is not correct, hence the test */
     ok (GetFileAttributesA("should_be_non_existing_deadbeef") == INVALID_FILE_ATTRIBUTES,
         "Local file should not have been created\n");
-    }
     DeleteFileA("should_be_non_existing_deadbeef");
 
     /* No local file */
     SetLastError(0xdeadbeef);
     bRet = FtpGetFileA(hFtp, "welcome.msg", NULL, FALSE, FILE_ATTRIBUTE_NORMAL, FTP_TRANSFER_TYPE_UNKNOWN, 0);
     ok ( bRet == FALSE, "Expected FtpGetFileA to fail\n");
-    todo_wine
     ok ( GetLastError() == ERROR_INVALID_PARAMETER,
         "Expected ERROR_INVALID_PARAMETER, got %d\n", GetLastError());
 
@@ -317,13 +310,10 @@ static void test_getfile(void)
     SetLastError(0xdeadbeef);
     bRet = FtpGetFileA(hFtp, "welcome.msg", "should_be_non_existing_deadbeef", FALSE, FILE_ATTRIBUTE_NORMAL, 5, 0);
     ok ( bRet == FALSE, "Expected FtpGetFileA to fail\n");
-    todo_wine
-    {
     ok ( GetLastError() == ERROR_INVALID_PARAMETER,
         "Expected ERROR_INVALID_PARAMETER, got %d\n", GetLastError());
     ok (GetFileAttributesA("should_be_non_existing_deadbeef") == INVALID_FILE_ATTRIBUTES,
         "Local file should not have been created\n");
-    }
     DeleteFileA("should_be_non_existing_deadbeef");
 
     /* Remote file doesn't exist */
@@ -334,6 +324,7 @@ static void test_getfile(void)
     {
     ok ( GetLastError() == ERROR_INTERNET_EXTENDED_ERROR,
         "Expected ERROR_INTERNET_EXTENDED_ERROR, got %d\n", GetLastError());
+    /* Currently Wine always creates the local file (even on failure) which is not correct, hence the test */
     ok (GetFileAttributesA("should_also_be_non_existing_deadbeef") == INVALID_FILE_ATTRIBUTES,
         "Local file should not have been created\n");
     }
@@ -390,7 +381,6 @@ static void test_getfile(void)
     SetLastError(0xdeadbeef);
     bRet = FtpGetFileA(hConnect, NULL, "should_be_non_existing_deadbeef", FALSE, FILE_ATTRIBUTE_NORMAL, FTP_TRANSFER_TYPE_UNKNOWN, 0);
     ok ( bRet == FALSE, "Expected FtpGetFileA to fail\n");
-    todo_wine
     ok ( GetLastError() == ERROR_INVALID_PARAMETER,
         "Expected ERROR_INVALID_PARAMETER, got %d\n", GetLastError());