diff --git a/src/plugins/streamers/pcb/db_plugin/dbGerberImportData.h b/src/plugins/streamers/pcb/db_plugin/dbGerberImportData.h
index 78ae2c71f..cf929f117 100644
--- a/src/plugins/streamers/pcb/db_plugin/dbGerberImportData.h
+++ b/src/plugins/streamers/pcb/db_plugin/dbGerberImportData.h
@@ -58,7 +58,7 @@ struct GerberFreeFileDescriptor
   std::vector<int> layout_layers;
 };
 
-struct GerberImportData
+struct DB_PLUGIN_PUBLIC GerberImportData
 {
 public:
   GerberImportData ();