1 files changed, 1 insertions, 1 deletions
diff --git a/config.mk b/config.mk
index e11d142..f19df43 100644
--- a/config.mk
+++ b/config.mk
@@ -12,7 +12,7 @@ INCS = -I. -I/usr/include
 LIBS = -L/usr/lib -lc -lX11
 
 # flags
-CPPFLAGS = -DVERSION=\"${VERSION}\"
+CPPFLAGS = -DVERSION=\"${VERSION}\" -D_BSD_SOURCE
 CFLAGS = -g -std=c99 -pedantic -Wall -O0 ${INCS} ${CPPFLAGS}
 LDFLAGS = -g ${LIBS}