diff --git a/test/cohen_acceleration_test.cpp b/test/cohen_acceleration_test.cpp
index 24534cdf5..e29b2fb36 100644
--- a/test/cohen_acceleration_test.cpp
+++ b/test/cohen_acceleration_test.cpp
@@ -13,10 +13,12 @@
 using boost::multiprecision::float128;
 #endif
 #include <boost/multiprecision/cpp_bin_float.hpp>
+#include <cmath>
 
 using boost::math::tools::cohen_acceleration;
 using boost::multiprecision::cpp_bin_float_100;
 using boost::math::constants::pi;
+using std::log;
 
 template<typename Real>
 class G {