diff --git a/src/test.cpp b/src/test.cpp
index 87ab49c..85f1bad 100644
--- a/src/test.cpp
+++ b/src/test.cpp
@@ -20,6 +20,7 @@
 #include <thread>
 #include <vector>
 
+#undef NDEBUG
 #include <assert.h>
 
 static const std::string color("");