diff --git a/src/Makefile b/src/Makefile
index d59a69c5c..04c1f7a0b 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -216,6 +216,7 @@ ifeq ($(USE_SYSTEM_UNRAR),0)
 ifneq ($(CC),clang)
 CFLAGS_UNRAR            += -Wno-class-memaccess
 CFLAGS_UNRAR            += -Wno-misleading-indentation
+CFLAGS_UNRAR            += -Wno-format-overflow
 endif
 CFLAGS_UNRAR            += -Wno-missing-braces
 CFLAGS_UNRAR            += -Wno-unused-variable