1 files changed, 2 insertions, 0 deletions
diff --git a/muse2/al/sig.h b/muse2/al/sig.h
index 53f060b5..ed18981f 100644
--- a/muse2/al/sig.h
+++ b/muse2/al/sig.h
@@ -21,6 +21,8 @@
 #ifndef __SIG_H__
 #define __SIG_H__
 
+#include <map>
+
 #include "../muse/xml.h"
 class Xml;