diff --git a/archimedean.cpp b/archimedean.cpp
index 9e9a7a4b..8c976751 100644
--- a/archimedean.cpp
+++ b/archimedean.cpp
@@ -826,7 +826,7 @@ bool linespattern(cell *c) {
   }
 
 int threecolor(int id) {
-  if(haveph)
+  if(current.have_ph)
     return !pseudohept(id);
   else if(nonbitrunc)
     return current.tilegroup[id];