diff --git a/Contrib/System/Source/System.c b/Contrib/System/Source/System.c
index dce1a097..a9a32f48 100644
--- a/Contrib/System/Source/System.c
+++ b/Contrib/System/Source/System.c
@@ -1047,7 +1047,7 @@ void ParamsIn(SystemProc *proc)
             {
               LPTSTR straddr = system_getuservariableptr(par->Input - 1);
               par->Value = (INT_PTR) straddr;
-              par->Value += sizeof(void*) > 4 ? sizeof(_T("-9223372036854775807")) : sizeof(_T("-2147483647"));
+              par->Value += sizeof(void*) > 4 ? sizeof(_T("-9223372036854775807###")) : sizeof(_T("-2147483647")); // "###" for sizeof(void*) alignment
               IntPtrToStr(par->Value, straddr);
             }
             break;
diff --git a/Contrib/System/System.html b/Contrib/System/System.html
index a10845b2..2ff407b8 100644
--- a/Contrib/System/System.html
+++ b/Contrib/System/System.html
@@ -290,7 +290,7 @@ DetailPrint $4
 <td>callback</td>
 </tr>
 <th>@</th>
-<td>Direct register memory access (Buffer is limited to <code>(NSIS_MAX_STRLEN - 21) * NSIS_CHAR_SIZE</code> bytes)</td>
+<td>Direct register memory access (Buffer is limited to <code>(NSIS_MAX_STRLEN - 24) * NSIS_CHAR_SIZE</code> bytes)</td>
 </tr>
 <tr>
 <tr>