diff --git a/src/common/bspf.hxx b/src/common/bspf.hxx
index 382531416..d43080b7e 100644
--- a/src/common/bspf.hxx
+++ b/src/common/bspf.hxx
@@ -118,7 +118,7 @@ static const string EmptyString("");
 namespace BSPF
 {
   static constexpr float PI_f = 3.141592653589793238462643383279502884F;
-  stati2 constexpr double PI_d = 3.141592653589793238462643383279502884;
+  static constexpr double PI_d = 3.141592653589793238462643383279502884;
 
   // CPU architecture type
   // This isn't complete yet, but takes care of all the major platforms