1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 07afb7e..19eb0e7 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@ LIBDIR ?= $(PREFIX)/lib
 INCLUDEDIR ?= $(PREFIX)/include
 MANDIR ?= $(PREFIX)/share/man
 
-CFLAGS := -Wall -Wextra -flto
+CFLAGS := -Wall -Wextra -flto -funsigned-char
 
 ### build mode