Index: bsd.port.mk
===================================================================
diff --git a/head/Mk/bsd.port.mk b/head/Mk/bsd.port.mk
--- a/head/Mk/bsd.port.mk	(revision 321710)
+++ b/head/Mk/bsd.port.mk	(working copy)
@@ -1635,9 +1635,12 @@
 HAVE_COMPAT_IA32_LIBS?=  YES
 .endif
 .if !defined(HAVE_COMPAT_IA32_KERN)
-HAVE_COMPAT_IA32_KERN!= if ${SYSCTL} -n compat.ia32.maxvmem >/dev/null 2>&1; then echo YES; fi
+HAVE_COMPAT_IA32_KERN!= if ${SYSCTL} -n compat.ia32.maxvmem >/dev/null 2>&1; then echo YES; fi; echo
+.if empty(HAVE_COMPAT_IA32_KERN)
+.undef HAVE_COMPAT_IA32_KERN
 .endif
 .endif
+.endif
 
 .if defined(IA32_BINARY_PORT) && ${ARCH} != "i386"
 .if ${ARCH} == "amd64" || ${ARCH} == "ia64"