diff --git a/src/engine/date.h b/src/engine/date.h
index ce4cf6833a..9ac825291a 100644
--- a/src/engine/date.h
+++ b/src/engine/date.h
@@ -31,6 +31,7 @@
 #ifndef XACC_DATE_H
 #define XACC_DATE_H
 
+#include <glib.h>
 #include <time.h>