diff --git a/db/db1100.cpp b/db/db1100.cpp
index 895ce2d91..10cf2d598 100755
--- a/db/db1100.cpp
+++ b/db/db1100.cpp
@@ -17,6 +17,7 @@
 #include "dblib.h"
 
 #include "dist.h"
+#include "rdist.h"
 #include "../mg/anamag.h"
 
 #include "db1100a.h"