diff --git a/make-linux.mk b/make-linux.mk
index e38c8aca..ee222115 100644
--- a/make-linux.mk
+++ b/make-linux.mk
@@ -146,15 +146,19 @@ ifeq ($(CC_MACH),e2k)
 endif
 ifeq ($(CC_MACH),i386)
 	ZT_ARCHITECTURE=1
+	ZT_SSO_SUPPORTED=1
 endif
 ifeq ($(CC_MACH),i486)
 	ZT_ARCHITECTURE=1
+	ZT_SSO_SUPPORTED=1
 endif
 ifeq ($(CC_MACH),i586)
 	ZT_ARCHITECTURE=1
+	ZT_SSO_SUPPORTED=1
 endif
 ifeq ($(CC_MACH),i686)
 	ZT_ARCHITECTURE=1
+	ZT_SSO_SUPPORTED=1
 endif
 ifeq ($(CC_MACH),arm)
 	ZT_ARCHITECTURE=3