diff --git a/src/slope/regularization_sequence.cpp b/src/slope/regularization_sequence.cpp
index cdb00d1..c1d7160 100644
--- a/src/slope/regularization_sequence.cpp
+++ b/src/slope/regularization_sequence.cpp
@@ -1,5 +1,4 @@
 #include "regularization_sequence.h"
-#include "math.h"
 #include "qnorm.h"
 #include <Eigen/Core>