1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index a215292..f2c5cee 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ DOCS  = usr.bin.badwolf README.md KnowledgeBase.md
 
 CC     = cc
 CFLAGS = -g -Wall -Wextra -Wconversion -Wsign-conversion
-CDEPS  = `pkg-config --cflags $(DEPS)` -DDATADIR=\"$(DATADIR)\" -DPACKAGE=\"$(PACKAGE)\" -D_DEFAULT_SOURCE -DVERSION=\"$(VERSION_FULL)\"
+CDEPS  = `pkg-config --cflags $(DEPS)` -DDATADIR=\"$(DATADIR)\" -DPACKAGE=\"$(PACKAGE)\" -D_POSIX_C_SOURCE=200809L -DVERSION=\"$(VERSION_FULL)\"
 LIBS   = `pkg-config --libs $(DEPS)`
 
 all: $(EXE) $(TRANS)