diff --git a/src/core/wscript b/src/core/wscript
index ac96b2ba6..afb4be869 100644
--- a/src/core/wscript
+++ b/src/core/wscript
@@ -105,5 +105,6 @@ def build(bld):
         'int-to-type.h',
         'type-id-default-value.h',
         'value.h',
+        'param-spec-helper.h',
         ]