diff --git a/dev-lua/mpack/mpack-1.0.12.ebuild b/dev-lua/mpack/mpack-1.0.12.ebuild
index e724b86a46b8e..0d3dc279196c8 100644
--- a/dev-lua/mpack/mpack-1.0.12.ebuild
+++ b/dev-lua/mpack/mpack-1.0.12.ebuild
@@ -58,6 +58,7 @@ lua_src_compile() {
 }
 
 src_compile() {
+	tc-export PKG_CONFIG
 	lua_foreach_impl lua_src_compile
 }