diff --git a/dlls/kernel32/tests/profile.c b/dlls/kernel32/tests/profile.c
index cddc9a0..4c0964c 100644
--- a/dlls/kernel32/tests/profile.c
+++ b/dlls/kernel32/tests/profile.c
@@ -338,11 +338,18 @@ static void test_profile_existing(void)
                        OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
         ok(INVALID_HANDLE_VALUE != h, "%d: CreateFile failed\n",i);
         SetLastError(0xdeadbeef);
+        /* Fill the buffer with non-zero values so we can test if the
+           result is properly null terminated */
+        memset(buffer, 0xff, sizeof(buffer));
         ret = GetPrivateProfileStringA(SECTION, KEY, NULL, buffer, MAX_PATH, testfile2);
         if (!pe[i].read_error)
             ok( ret, "%d: GetPrivateProfileString failed with error %u\n", i, GetLastError() );
         else
+        {
             ok( !ret, "%d: GetPrivateProfileString succeeded\n", i );
+            todo_wine
+            ok( buffer[ret] == 0, "Get GetPrivateProfileString should terminate buffer with null\n" );
+        }
         CloseHandle(h);
     }
     ok( DeleteFile(testfile2), "delete failed\n" );