diff --git a/libs/geom/include/psemek/geom/constants.hpp b/libs/geom/include/psemek/geom/constants.hpp
index dc305313..d8fe5391 100644
--- a/libs/geom/include/psemek/geom/constants.hpp
+++ b/libs/geom/include/psemek/geom/constants.hpp
@@ -3,6 +3,6 @@
 namespace psemek::geom
 {
 
-	constexpr float pi = 3.141592653589793f;
+	constexpr long double pi = 3.141592653589793238462643383279502884l;
 
 }