diff --git a/configure/os/CONFIG.Common.linux-x86 b/configure/os/CONFIG.Common.linux-x86
index f5157dc13..60ab38d0d 100644
--- a/configure/os/CONFIG.Common.linux-x86
+++ b/configure/os/CONFIG.Common.linux-x86
@@ -16,6 +16,9 @@ ARCH_DEP_CPPFLAGS += -D_X86_
 ARCH_DEP_CFLAGS += -m32
 ARCH_DEP_LDFLAGS += -m32
 
+# default minimum target architecture is pentium
+ARCH_DEP_CFLAGS += -march=i586
+
 # If your crosscompiler name has a GNU target prefix like <gnutarget>-gcc,
 # e.g. x86-redhat-linux-gcc, put a GNU_TARGET definition in
 # CONFIG_SITE.<host>.linux-x86 file, e.g. GNU_TARGET=x86-redhat-linux