diff --git a/vm/aging_space.hpp b/vm/aging_space.hpp
index 743363b10c..c2ec2a645e 100644
--- a/vm/aging_space.hpp
+++ b/vm/aging_space.hpp
@@ -3,10 +3,6 @@ namespace factor
 
 struct aging_space : old_space {
 	aging_space(cell size, cell start) : old_space(size,start) {}
-
-	bool is_nursery_p() { return false; }
-	bool is_aging_p()   { return true; }
-	bool is_tenured_p() { return false; }
 };
 
 }
diff --git a/vm/copying_collector.hpp b/vm/copying_collector.hpp
index 654b84f3ae..297e70e687 100644
--- a/vm/copying_collector.hpp
+++ b/vm/copying_collector.hpp
@@ -153,19 +153,13 @@ end:		this->myvm->gc_stats.card_scan_time += (current_micros() - start_time);
 		for(; iter != end; iter++) trace_literal_references(*iter);
 	}
 
-	template<typename SourceGeneration>
-	void trace_objects_between(SourceGeneration *gen, cell scan, cell *end)
-	{
-		while(scan && scan < *end)
-		{
-			this->trace_slots((object *)scan);
-			scan = gen->next_object_after(this->myvm,scan);
-		}
-	}
-
 	void cheneys_algorithm()
 	{
-		trace_objects_between(this->target,scan,&this->target->here);
+		while(scan && scan < this->target->here)
+		{
+			this->trace_slots((object *)scan);
+			scan = this->target->next_object_after(this->myvm,scan);
+		}
 	}
 };
 
diff --git a/vm/tenured_space.hpp b/vm/tenured_space.hpp
index a05b272fb6..f9f584b200 100644
--- a/vm/tenured_space.hpp
+++ b/vm/tenured_space.hpp
@@ -3,10 +3,6 @@ namespace factor
 
 struct tenured_space : old_space {
 	tenured_space(cell size, cell start) : old_space(size,start) {}
-
-	bool is_nursery_p() { return false; }
-	bool is_aging_p()   { return false; }
-	bool is_tenured_p() { return true; }
 };
 
 }