diff --git a/lib/Makefile.am b/lib/Makefile.am
index 3a50b465..b677697a 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -11,6 +11,7 @@ libshadow_la_CPPFLAGS += -DVENDORDIR=\"$(VENDORDIR)\"
 endif
 
 libshadow_la_CPPFLAGS += -I$(top_srcdir)
+libshadow_la_CFLAGS = $(LIBBSD_CFLAGS)
 
 libshadow_la_SOURCES = \
 	commonio.c \
diff --git a/src/Makefile.am b/src/Makefile.am
index a1a2e4e3..d86a3758 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -13,6 +13,8 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir) \
 	-DLOCALEDIR=\"$(datadir)/locale\"
 
+AM_CFLAGS = $(LIBBSD_CFLAGS)
+
 # XXX why are login and su in /bin anyway (other than for
 # historical reasons)?
 #