diff --git a/kernel.h b/kernel.h
index a3aaa5e6657ae45108f8355bd790120f22d2d70c..62ed6a12decad56141f4fad7a12130a4dfd3b3d3 100644
--- a/kernel.h
+++ b/kernel.h
@@ -148,6 +148,7 @@ namespace MISCMATHS {
       }
 
       const kernelstorage* kernelvals() { return storedkernel; }
+      const kernelstorage* kernelvals() const { return storedkernel; }
 
   };