diff --git a/pform_pclass.cc b/pform_pclass.cc
index a129e19be..f922b9df9 100644
--- a/pform_pclass.cc
+++ b/pform_pclass.cc
@@ -86,6 +86,7 @@ void pform_class_property(const struct vlltype&loc,
 
 	    pform_cur_class->type->properties[curp->name]
 		  = class_type_t::prop_info_t(property_qual,use_type);
+	    FILE_NAME(&pform_cur_class->type->properties[curp->name], loc);
 
 	    if (PExpr*rval = curp->expr.release()) {
 		  PExpr*lval = new PEIdent(curp->name);
diff --git a/pform_types.h b/pform_types.h
index dc4bb8da4..45e312e6f 100644
--- a/pform_types.h
+++ b/pform_types.h
@@ -336,7 +336,7 @@ struct class_type_t : public data_type_t {
       std::list<PExpr*>base_args;
 
 	// This is a map of the properties. Map the name to the type.
-      struct prop_info_t {
+      struct prop_info_t : public LineInfo {
 	    inline prop_info_t() : qual(property_qualifier_t::make_none()), type(0) { }
 	    inline prop_info_t(property_qualifier_t q, data_type_t*t) : qual(q), type(t) { }
 	    property_qualifier_t qual;