diff --git a/bin/Makefile.inc b/bin/Makefile.inc
index 30100450b..256ee67d8 100644
--- a/bin/Makefile.inc
+++ b/bin/Makefile.inc
@@ -1,4 +1,2 @@
-CPPFLAGS+= -D_NETBSD_SOURCE
-
 BINDIR?=/bin
 
diff --git a/libexec/Makefile.inc b/libexec/Makefile.inc
index 8b4d19daf..b1b2c0fe0 100644
--- a/libexec/Makefile.inc
+++ b/libexec/Makefile.inc
@@ -1,3 +1,3 @@
-CPPFLAGS+= -D_NETBSD_SOURCE -D__NBSD_LIBC=1
+CPPFLAGS+= -D__NBSD_LIBC=1
 
 BINDIR?=        /usr/libexec