diff --git a/NPLib/Core/NPDeltaSpectraLinkdef.h b/NPLib/Core/NPDeltaSpectraLinkdef.h
new file mode 100644
index 0000000000000000000000000000000000000000..d2392df4a0f8afac7b17afe9bc4caefaf58cfae0
--- /dev/null
+++ b/NPLib/Core/NPDeltaSpectraLinkdef.h
@@ -0,0 +1,3 @@
+#ifdef __CINT__
+#pragma link C++ class NPL::DeltaSpectra+;
+#endif