diff --git a/compiler/optimizing/graph_visualizer.h b/compiler/optimizing/graph_visualizer.h
index 2638cf5..7cd74e9 100644
--- a/compiler/optimizing/graph_visualizer.h
+++ b/compiler/optimizing/graph_visualizer.h
@@ -25,6 +25,9 @@
 class DexCompilationUnit;
 class HGraph;
 
+static const char* kLivenessPassName = "liveness";
+static const char* kRegisterAllocatorPassName = "register";
+
 /**
  * If enabled, emits compilation information suitable for the c1visualizer tool
  * and IRHydra.