diff --git a/msvc/ecl-threads.def b/msvc/ecl-threads.def
index abf99e0a7..e4ea6e9e2 100755
--- a/msvc/ecl-threads.def
+++ b/msvc/ecl-threads.def
@@ -274,11 +274,14 @@ EXPORTS
 	si_load_foreign_module
 	si_null_pointer_p
 	si_size_of_foreign_elt_type
+	si_call_cfun
 
 	ecl_make_foreign_data
 	ecl_allocate_foreign_data
 	ecl_foreign_data_pointer_safe
 	ecl_string_pointer_safe
+	ecl_foreign_data_ref_elt
+	ecl_foreign_data_set_elt
 
 	; file.c
 
diff --git a/msvc/ecl.def b/msvc/ecl.def
index 2fcae8d4c..a81486e4c 100644
--- a/msvc/ecl.def
+++ b/msvc/ecl.def
@@ -274,11 +274,14 @@ EXPORTS
 	si_load_foreign_module
 	si_null_pointer_p
 	si_size_of_foreign_elt_type
+	si_call_cfun
 
 	ecl_make_foreign_data
 	ecl_allocate_foreign_data
 	ecl_foreign_data_pointer_safe
 	ecl_string_pointer_safe
+	ecl_foreign_data_ref_elt
+	ecl_foreign_data_set_elt
 
 	; file.c