diff --git a/modules/rostests/winetests/winhttp/winhttp.c b/modules/rostests/winetests/winhttp/winhttp.c
index 776ee53e379..1987e1c53b7 100644
--- a/modules/rostests/winetests/winhttp/winhttp.c
+++ b/modules/rostests/winetests/winhttp/winhttp.c
@@ -4055,6 +4055,7 @@ static void test_IWinHttpRequest(int port)
 
     hr = IWinHttpRequest_get_ResponseText( req, &response );
     ok( hr == S_OK, "got %08x\n", hr );
+    ok( !memcmp(response, data_start, sizeof(data_start)), "got %s\n", wine_dbgstr_wn1(response, 32) );
     ok( !memcmp(response, data_start, sizeof(data_start)), "got %s\n", wine_dbgstr_wn(response, 32) );
     SysFreeString( response );
 
@@ -4276,6 +4277,7 @@ static void test_IWinHttpRequest(int port)
 
     hr = IWinHttpRequest_get_ResponseText( req, &response );
     ok( hr == S_OK, "got %08x\n", hr );
+    ok( !memcmp(response, data_start, sizeof(data_start)), "got %s\n", wine_dbgstr_wn1(response, 32) );
     ok( !memcmp(response, data_start, sizeof(data_start)), "got %s\n", wine_dbgstr_wn(response, 32) );
     SysFreeString( response );
 
diff --git a/sdk/include/reactos/wine/test.h b/sdk/include/reactos/wine/test.h
index 414215ab0c4..721e03601d1 100644
--- a/sdk/include/reactos/wine/test.h
+++ b/sdk/include/reactos/wine/test.h
@@ -76,6 +76,7 @@ extern void winetest_add_failures( LONG new_failures );
 extern void winetest_wait_child_process( HANDLE process );
 
 extern const char *wine_dbgstr_wn( const WCHAR *str, intptr_t n );
+extern const char *wine_dbgstr_wn1( const WCHAR *str, intptr_t n );
 extern const char *wine_dbgstr_an( const CHAR *str, intptr_t n );
 extern const char *wine_dbgstr_guid( const GUID *guid );
 extern const char *wine_dbgstr_point( const POINT *guid );
@@ -752,6 +753,59 @@ const char *wine_dbgstr_wn( const WCHAR *str, intptr_t n )
     return res;
 }
 
+const char *wine_dbgstr_wn1( const WCHAR *str, intptr_t n )
+{
+    char *res;
+    static const char hex[16] = {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
+    char buffer[300], *dst = buffer;
+
+    if (!str) return "(null)";
+    if (!((ULONG_PTR)str >> 16))
+    {
+        res = get_temp_buffer( 6 );
+        sprintf( res, "#%04x", LOWORD(str) );
+        return res;
+    }
+    if (IsBadStringPtrW(str,n)) return "(invalid)";
+    if (n == -1) for (n = 0; str[n]; n++) ;
+    *dst++ = 'L';
+    *dst++ = '"';
+    while (n-- > 0 && dst <= buffer + sizeof(buffer) - 10)
+    {
+        WCHAR c = *str++;
+        switch (c)
+        {
+        case '\n': *dst++ = '\\'; *dst++ = 'n'; break;
+        case '\r': *dst++ = '\\'; *dst++ = 'r'; break;
+        case '\t': *dst++ = '\\'; *dst++ = 't'; break;
+        case '"':  *dst++ = '\\'; *dst++ = '"'; break;
+        case '\\': *dst++ = '\\'; *dst++ = '\\'; break;
+        default:
+            if (c < ' ' || c >= 127)
+            {
+                *dst++ = '\\';
+                *dst++ = hex[(c >> 12) & 0x0f];
+                *dst++ = hex[(c >> 8) & 0x0f];
+                *dst++ = hex[(c >> 4) & 0x0f];
+                *dst++ = hex[c & 0x0f];
+            }
+            else *dst++ = (char)c;
+        }
+    }
+    *dst++ = '"';
+    if (n > 0)
+    {
+        *dst++ = '.';
+        *dst++ = '.';
+        *dst++ = '.';
+    }
+    *dst = 0;
+
+    res = get_temp_buffer(strlen(buffer + 1));
+    strcpy(res, buffer);
+    return res;
+}
+
 const char *wine_dbgstr_guid( const GUID *guid )
 {
     char *res;