diff --git a/maths.cpp b/maths.cpp
index 6ab5e70a..14084674 100644
--- a/maths.cpp
+++ b/maths.cpp
@@ -149,6 +149,11 @@ template uint32_t round_pow2 (uint32_t);
 template uint64_t round_pow2 (uint64_t);
 
 
+//-----------------------------------------------------------------------------
+template float PI<float>;
+template double PI<double>;
+
+
 //-----------------------------------------------------------------------------
 // Simple instantiations. Some functions aren't used internally to the library
 // so it's easier to instantiate early and check for broken code at library
diff --git a/test/maths.cpp b/test/maths.cpp
index dfc34c79..d3721e91 100644
--- a/test/maths.cpp
+++ b/test/maths.cpp
@@ -114,8 +114,8 @@ main (int, char **) {
     CHECK_EQ (sign ( numeric_limits<double>::infinity ()),  1);
     CHECK_EQ (sign (-numeric_limits<double>::infinity ()), -1);
 
-    CHECK_EQ (to_degrees (PI<double>),  180.0);
     CHECK_EQ (to_degrees (PI<float>),  180.f);
+    CHECK_EQ (to_degrees (PI<double>),  180.0);
     CHECK_EQ (to_radians (180.f),  PI<float>);
     CHECK_EQ (to_radians (180.0),  PI<double>);