diff --git a/src/stub/src/i386-linux.elf.execve-entry.S b/src/stub/src/i386-linux.elf.execve-entry.S
index 2adb38b7..f4b19708 100644
--- a/src/stub/src/i386-linux.elf.execve-entry.S
+++ b/src/stub/src/i386-linux.elf.execve-entry.S
@@ -99,7 +99,7 @@ section LEXEC010
                 mov     esi, INP
                 mov     edi, OUTP
 
-                or      ebp, byte -1
+                or      ebp, -1
 //              align   8
 
 #include      "arch/i386/nrv2b_d32.S"