diff --git a/include/boost/math/special_functions/detail/unchecked_factorial.hpp b/include/boost/math/special_functions/detail/unchecked_factorial.hpp
index 35b196896..eb8927a26 100644
--- a/include/boost/math/special_functions/detail/unchecked_factorial.hpp
+++ b/include/boost/math/special_functions/detail/unchecked_factorial.hpp
@@ -403,6 +403,11 @@ struct max_factorial
    BOOST_STATIC_CONSTANT(unsigned, value = 100);
 };
 
+#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
+template <class T>
+const unsigned max_factorial<T>::value;
+#endif
+
 } // namespace math
 } // namespace boost
 
diff --git a/include/boost/math/special_functions/digamma.hpp b/include/boost/math/special_functions/digamma.hpp
index a1008d2bb..3765ca2db 100644
--- a/include/boost/math/special_functions/digamma.hpp
+++ b/include/boost/math/special_functions/digamma.hpp
@@ -197,7 +197,7 @@ T digamma_imp_1_2(T x, const mpl::int_<0>*)
    g -= root3;
    g -= root4;
    g -= root5;
-   T r = tools::evaluate_polynomial(P, x-1) / tools::evaluate_polynomial(Q, x-1);
+   T r = tools::evaluate_polynomial(P, T(x-1)) / tools::evaluate_polynomial(Q, T(x-1));
    T result = g * Y + g * r;
 
    return result;
diff --git a/include/boost/math/special_functions/spherical_harmonic.hpp b/include/boost/math/special_functions/spherical_harmonic.hpp
index 37968eadc..33b257448 100644
--- a/include/boost/math/special_functions/spherical_harmonic.hpp
+++ b/include/boost/math/special_functions/spherical_harmonic.hpp
@@ -36,7 +36,7 @@ inline T spherical_harmonic_prefix(unsigned n, unsigned m, T theta, const Policy
    T sin_theta = sin(theta);
    T x = cos(theta);
 
-   T leg = detail::legendre_p_imp(n, m, x, pow(fabs(sin_theta), T(m)), pol);
+   T leg = detail::legendre_p_imp(n, m, x, static_cast<T>(pow(fabs(sin_theta), T(m))), pol);
    
    T prefix = boost::math::tgamma_delta_ratio(static_cast<T>(n - m + 1), static_cast<T>(2 * m), pol);
    prefix *= (2 * n + 1) / (4 * constants::pi<T>());