diff --git a/rogueviz/dhrg/dhrg.h b/rogueviz/dhrg/dhrg.h
index f3e16568..f6408f31 100644
--- a/rogueviz/dhrg/dhrg.h
+++ b/rogueviz/dhrg/dhrg.h
@@ -37,5 +37,9 @@ extern int iterations;
 void clear();
 
 void graph_from_rv();
+
+ld loglikopt();
+int quickdist(mycell *c1, mycell *c2, int setid=0);
+extern ll tally[MAXDIST];
 }
 #endif
diff --git a/rogueviz/dhrg/segment.cpp b/rogueviz/dhrg/segment.cpp
index f4e908b2..c45a96b9 100644
--- a/rogueviz/dhrg/segment.cpp
+++ b/rogueviz/dhrg/segment.cpp
@@ -243,7 +243,7 @@ int segmentdist(segment *p1, segment *p2, int d) {
     }
   }
 
-int quickdist(mycell *c1, mycell *c2, int setid=0) {
+int quickdist(mycell *c1, mycell *c2, int setid) {
   int d = 0;
   c1->build();
   c2->build();