diff --git a/include/aidge/backend/cpu/operator/HeavisideImpl_kernels.hpp b/include/aidge/backend/cpu/operator/HeavisideImpl_kernels.hpp
index 92f12fbed5c6530a6c5b57e74d2b46446533ca02..03815dc2d7b29c3939851870be11f8c40fe0b4db 100644
--- a/include/aidge/backend/cpu/operator/HeavisideImpl_kernels.hpp
+++ b/include/aidge/backend/cpu/operator/HeavisideImpl_kernels.hpp
@@ -15,6 +15,7 @@
 #include "aidge/utils/Registrar.hpp"
 
 #include <cstddef> // std::size_t
+#define _USE_MATH_DEFINES
 #include <cmath>
 
 #include "aidge/backend/cpu/operator/HeavisideImpl.hpp"