1 files changed, 1 insertions, 1 deletions
diff --git a/config.mk b/config.mk
index e8cf5ef..8c28fe6 100644
--- a/config.mk
+++ b/config.mk
@@ -24,7 +24,7 @@ LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS}
 
 # flags
 CPPFLAGS = -D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=200809L -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
-CFLAGS   = -ansi -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
+CFLAGS   = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
 LDFLAGS  = -s ${LIBS}
 
 # compiler and linker