diff --git a/mk/os-FreeBSD.mk b/mk/os-FreeBSD.mk
index 0e4fd101..4bd1a33a 100644
--- a/mk/os-FreeBSD.mk
+++ b/mk/os-FreeBSD.mk
@@ -11,3 +11,5 @@
 # Generic definitions
 
 include ${MK}/os-BSD.mk
+
+CPPFLAGS+=	-D_WITH_GETLINE