diff --git a/extern/audaspace/include/file/FileManager.h b/extern/audaspace/include/file/FileManager.h
index 03943ea8ae0..56708607ea6 100644
--- a/extern/audaspace/include/file/FileManager.h
+++ b/extern/audaspace/include/file/FileManager.h
@@ -27,6 +27,7 @@
 
 #include <list>
 #include <memory>
+#include <string>
 
 AUD_NAMESPACE_BEGIN