diff --git a/Makefile b/Makefile
index f7bcf2e..bd2944a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 CXX = clang++
-CXXFLAGS = -O2 -march=native -std=c++17
+CXXFLAGS = -O2 -march=native -Wall -std=c++17
 
 CourseOfferingsScraper: CourseOfferingsScraper.cpp json.o