diff --git a/reactos/base/shell/explorer/i386-stub-win32.c b/reactos/base/shell/explorer/i386-stub-win32.c
index 3587612d704..9bd83d3ce08 100644
--- a/reactos/base/shell/explorer/i386-stub-win32.c
+++ b/reactos/base/shell/explorer/i386-stub-win32.c
@@ -547,7 +547,7 @@ getpacket (void)
 	  count = 0;
 
 	  /* now, read until a # or end of buffer is found */
-	  while (count < BUFMAX)
+	  while (count < BUFMAX - 1)
 		{
 		  ch = getDebugChar ();
 		  if (ch == '$')