--- a/components/proftpd/Makefile	Fri Oct 14 00:06:47 2016 -0700
+++ b/components/proftpd/Makefile	Fri Oct 14 03:36:11 2016 -0700
@@ -61,9 +61,6 @@
 IPS_COMPONENT_VERSION=  $(COMPONENT_VERSION).2
 
 CFLAGS += -I$(USRINCDIR)/kerberosv5 -DHAVE_KRB5_H=1 -DKRB5_DLLIMP= -DHAVE__GETGRPSBYMEMBER -D_SOLARIS_DTRACE
-ifeq ($(OS_VERSION), 5.11)
-CFLAGS += -D_POSIX_PTHREAD_SEMANTICS
-endif
 LDFLAGS +=	$(CC_BITS)
 # Force immediate (no-lazy) binding because of chroot() can loose the access into (/usr)/lib
 LDFLAGS +=	-z guidance=nolazyload -z nolazyload -lbsm