diff --git a/msvc/ecl-threads.def b/msvc/ecl-threads.def
index a1b1e5ada..900baef1e 100755
--- a/msvc/ecl-threads.def
+++ b/msvc/ecl-threads.def
@@ -708,6 +708,7 @@ EXPORTS
 
 	; package.c
 
+	CEpackage_error
 	si_select_package
 	cl_find_package
 	cl_package_name
diff --git a/msvc/ecl.def b/msvc/ecl.def
index 602312820..881e9ad7c 100644
--- a/msvc/ecl.def
+++ b/msvc/ecl.def
@@ -709,6 +709,7 @@ EXPORTS
 
 	; package.c
 
+	CEpackage_error
 	si_select_package
 	cl_find_package
 	cl_package_name