1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 8cf35ad..e1281d1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-COMMONFLAGS = -Os -pipe -D_XOPEN_SOURCE=500
+COMMONFLAGS = -Os -pipe -D_XOPEN_SOURCE=700
 CFLAGS   = -std=c99
 CXXFLAGS = -std=c++11
 LIBS     = -lm -lrt