diff --git a/include/boost/math/special_functions/detail/airy_ai_bi_zero.hpp b/include/boost/math/special_functions/detail/airy_ai_bi_zero.hpp
index b5a71c78e..218cd349c 100644
--- a/include/boost/math/special_functions/detail/airy_ai_bi_zero.hpp
+++ b/include/boost/math/special_functions/detail/airy_ai_bi_zero.hpp
@@ -10,8 +10,8 @@
 // This header contains implementation details for estimating the zeros
 // of the Airy functions airy_ai and airy_bi on the negative real axis.
 //
-#ifndef _AIRY_AI_BI_ZERO_2013_01_20_HPP_
-  #define _AIRY_AI_BI_ZERO_2013_01_20_HPP_
+#ifndef BOOST_MATH_AIRY_AI_BI_ZERO_2013_01_20_HPP_
+  #define BOOST_MATH_AIRY_AI_BI_ZERO_2013_01_20_HPP_
 
   #include <boost/math/constants/constants.hpp>
   #include <boost/math/special_functions/cbrt.hpp>
@@ -157,4 +157,4 @@
   } // namespace math
   } // namespaces boost
 
-#endif // _AIRY_AI_BI_ZERO_2013_01_20_HPP_
+#endif // BOOST_MATH_AIRY_AI_BI_ZERO_2013_01_20_HPP_
diff --git a/include/boost/math/special_functions/detail/bessel_jy_zero.hpp b/include/boost/math/special_functions/detail/bessel_jy_zero.hpp
index ecd8696ee..0ce9af7e6 100644
--- a/include/boost/math/special_functions/detail/bessel_jy_zero.hpp
+++ b/include/boost/math/special_functions/detail/bessel_jy_zero.hpp
@@ -15,8 +15,8 @@
 // for small order, uniform asymptotic expansion for large order,
 // and iteration and root interlacing for negative order.
 //
-#ifndef _BESSEL_JY_ZERO_2013_01_18_HPP_
-  #define _BESSEL_JY_ZERO_2013_01_18_HPP_
+#ifndef BOOST_MATH_BESSEL_JY_ZERO_2013_01_18_HPP_
+  #define BOOST_MATH_BESSEL_JY_ZERO_2013_01_18_HPP_
 
   #include <algorithm>
   #include <boost/math/constants/constants.hpp>
@@ -614,4 +614,4 @@
     } // namespace bessel_zero
   } } } // namespace boost::math::detail
 
-#endif // _BESSEL_JY_ZERO_2013_01_18_HPP_
+#endif // BOOST_MATH_BESSEL_JY_ZERO_2013_01_18_HPP_