diff --git a/src/orange/surf/SurfaceTypeTraits.hh b/src/orange/surf/SurfaceTypeTraits.hh
index 3ceed246b7..309270d688 100644
--- a/src/orange/surf/SurfaceTypeTraits.hh
+++ b/src/orange/surf/SurfaceTypeTraits.hh
@@ -8,6 +8,7 @@
 #pragma once
 
 #include "corecel/cont/EnumClassUtils.hh"
+#include "corecel/math/Algorithms.hh"
 #include "orange/OrangeTypes.hh"
 
 #include "SurfaceFwd.hh"
diff --git a/src/orange/transform/TransformTypeTraits.hh b/src/orange/transform/TransformTypeTraits.hh
index 0c6a732c0c..64525fcb64 100644
--- a/src/orange/transform/TransformTypeTraits.hh
+++ b/src/orange/transform/TransformTypeTraits.hh
@@ -7,6 +7,7 @@
 //---------------------------------------------------------------------------//
 #pragma once
 
+#include "corecel/math/Algorithms.hh"
 #include "orange/OrangeTypes.hh"
 
 namespace celeritas
diff --git a/src/orange/univ/UniverseTypeTraits.hh b/src/orange/univ/UniverseTypeTraits.hh
index 4b00483aa2..8783cf488e 100644
--- a/src/orange/univ/UniverseTypeTraits.hh
+++ b/src/orange/univ/UniverseTypeTraits.hh
@@ -7,6 +7,7 @@
 //---------------------------------------------------------------------------//
 #pragma once
 
+#include "corecel/math/Algorithms.hh"
 #include "orange/OrangeTypes.hh"
 
 namespace celeritas