diff --git a/include/boost/random/inverse_gaussian_distribution.hpp b/include/boost/random/inverse_gaussian_distribution.hpp
index 1b9c4cd..69b97c8 100644
--- a/include/boost/random/inverse_gaussian_distribution.hpp
+++ b/include/boost/random/inverse_gaussian_distribution.hpp
@@ -220,9 +220,6 @@ private:
 
 	void init()
   {
-#ifndef BOOST_NO_STDC_NAMESPACE
-    using std::exp;
-#endif
 		_c = _alpha / (result_type(2) * _beta);
   }
 };
diff --git a/test/test_inverse_gaussian_distribution.cpp b/test/test_inverse_gaussian_distribution.cpp
index 909d867..2bf843e 100644
--- a/test/test_inverse_gaussian_distribution.cpp
+++ b/test/test_inverse_gaussian_distribution.cpp
@@ -17,21 +17,18 @@
 #define BOOST_RANDOM_ARG2 beta
 #define BOOST_RANDOM_ARG1_DEFAULT 1.0
 #define BOOST_RANDOM_ARG2_DEFAULT 1.0
-#define BOOST_RANDOM_ARG1_VALUE 7.5
+#define BOOST_RANDOM_ARG1_VALUE 2.0
 #define BOOST_RANDOM_ARG2_VALUE 0.25
 
 #define BOOST_RANDOM_DIST0_MIN 0
 #define BOOST_RANDOM_DIST0_MAX (std::numeric_limits<double>::infinity)()
 #define BOOST_RANDOM_DIST1_MIN 0
 #define BOOST_RANDOM_DIST1_MAX (std::numeric_limits<double>::infinity)()
-#define BOOST_RANDOM_DIST2_MIN 0
-#define BOOST_RANDOM_DIST2_MAX (std::numeric_limits<double>::infinity)()
 
 #define BOOST_RANDOM_TEST1_PARAMS
 #define BOOST_RANDOM_TEST1_MIN 0.0
-#define BOOST_RANDOM_TEST1_MAX 100.0
 
 #define BOOST_RANDOM_TEST2_PARAMS (1.0, 1000000.0)
-#define BOOST_RANDOM_TEST2_MIN 100.0
+#define BOOST_RANDOM_TEST2_MIN 0.0
 
 #include "test_distribution.ipp"