diff --git a/src/test/bignum_tests.cpp b/src/test/bignum_tests.cpp
index 38c625bba..8620f81f1 100644
--- a/src/test/bignum_tests.cpp
+++ b/src/test/bignum_tests.cpp
@@ -6,6 +6,22 @@
 
 BOOST_AUTO_TEST_SUITE(bignum_tests)
 
+// Unfortunately there's no standard way of preventing a function from being
+// inlined, so we define a macro for it.
+//
+// You should use it like this:
+//   NOINLINE void function() {...}
+#if defined(__GNUC__)
+// This also works and will be defined for any compiler implementing gcc
+// extensions, such as clang and icc.
+#define NOINLINE __attribute__((noinline))
+#elif defined(_MSC_VER)
+#define NOINLINE __declspec(noinline)
+#else
+// We give out a warning because it impacts the correctness of one bignum test.
+#warning You should define NOINLINE for your compiler.
+#define NOINLINE
+#endif
 
 // For the following test case, it is useful to use additional tools.
 //
diff --git a/src/util.h b/src/util.h
index cfc20b327..b77eb43c9 100644
--- a/src/util.h
+++ b/src/util.h
@@ -43,23 +43,6 @@ static const int64 CENT = 1000000;
 #define ARRAYLEN(array)     (sizeof(array)/sizeof((array)[0]))
 #define printf              OutputDebugStringF
 
-// Unfortunately there's no standard way of preventing a function from being
-// inlined, so we define a macro for it.
-//
-// You should use it like this:
-//   NOINLINE void function() {...}
-#if defined(__GNUC__)
-// This also works and will be defined for any compiler implementing gcc
-// extensions, such as clang and icc.
-#define NOINLINE __attribute__((noinline))
-#elif defined(_MSC_VER)
-#define NOINLINE __declspec(noinline)
-#else
-// We give out a warning because it impacts the correctness of one bignum test.
-#warning You should define NOINLINE for your compiler.
-#define NOINLINE
-#endif
-
 #ifdef snprintf
 #undef snprintf
 #endif