diff --git a/src/ol/format/topojsonformat.exports b/src/ol/format/topojsonformat.exports
new file mode 100644
index 0000000000..367c42efb8
--- /dev/null
+++ b/src/ol/format/topojsonformat.exports
@@ -0,0 +1,3 @@
+@exportSymbol ol.format.TopoJSON
+@exportProperty ol.format.TopoJSON.prototype.readFeatures
+@exportProperty ol.format.TopoJSON.prototype.readProjection