diff --git a/reactos/dll/win32/advapi32/reg/reg.c b/reactos/dll/win32/advapi32/reg/reg.c
index 61ecd6b870a..f1f8476c090 100644
--- a/reactos/dll/win32/advapi32/reg/reg.c
+++ b/reactos/dll/win32/advapi32/reg/reg.c
@@ -4225,11 +4225,11 @@ RegQueryValueA(HKEY hKey,
             RtlUnicodeStringToAnsiString(&AnsiString,
                                          &Value,
                                          FALSE);
-            *lpcbValue = ValueSize;
+            *lpcbValue = ValueSize / sizeof(WCHAR);
         }
         else if (lpcbValue != NULL)
         {
-            *lpcbValue = ValueSize;
+            *lpcbValue = ValueSize / sizeof(WCHAR);
         }
     }