1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index f902cfcfb7..b8a4af2fe6 100644
--- a/Makefile
+++ b/Makefile
@@ -251,7 +251,7 @@ CXXFLAGS += -std=c++11
 else
 CXXFLAGS += -std=c++0x
 endif
-CPPFLAGS += -g -Wall -Wextra -Werror -Wno-long-long -Wno-unused-parameter
+CPPFLAGS += -g -Wall -Wextra -Werror -Wno-long-long -Wno-unused-parameter -Wsign-conversion
 LDFLAGS += -g
 
 CPPFLAGS += $(CPPFLAGS_$(CONFIG))