1 files changed, 2 insertions, 2 deletions
diff --git a/Makefile b/Makefile
index aae8e6e..e4366f4 100644
--- a/Makefile
+++ b/Makefile
@@ -13,10 +13,10 @@ RANLIB = ranlib
 # use system flags.
 SFEED_CFLAGS = ${CFLAGS}
 SFEED_LDFLAGS = ${LDFLAGS}
-SFEED_CPPFLAGS = -D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700 -D_BSD_SOURCE
+SFEED_CPPFLAGS = -D_DEFAULT_SOURCE -D_XOPEN_SOURCE=700 -D_BSD_SOURCE
 
 # uncomment for conservative locked I/O.
-#SFEED_CPPFLAGS = -D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700 -D_BSD_SOURCE \
+#SFEED_CPPFLAGS = -D_DEFAULT_SOURCE -D_XOPEN_SOURCE=700 -D_BSD_SOURCE \
 #	-DGETNEXT=getchar
 
 BIN = \