--- a/components/proftpd/Makefile	Tue Apr 04 10:36:17 2017 -0700
+++ b/components/proftpd/Makefile	Tue Apr 04 16:12:22 2017 -0700
@@ -72,7 +72,7 @@
 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)
+ifeq ($(OS_VERSION), 11.3)
 CFLAGS += -D_POSIX_PTHREAD_SEMANTICS
 endif
 LDFLAGS +=	-m$(BITS)