diff --git a/src/search.cpp b/src/search.cpp
index 376705d1..ccea71ca 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -255,7 +255,7 @@ namespace {
     multiPV = std::max(multiPV, skill.candidates_size());
 
     // Iterative deepening loop until requested to stop or target depth reached
-    while (++depth < MAX_PLY && !Signals.stop && (!Limits.depth || depth <= Limits.depth))
+    while (++depth < DEPTH_MAX && !Signals.stop && (!Limits.depth || depth <= Limits.depth))
     {
         // Age out PV variability metric
         BestMoveChanges *= 0.5;
diff --git a/src/types.h b/src/types.h
index 94be8338..d725c136 100644
--- a/src/types.h
+++ b/src/types.h
@@ -212,7 +212,8 @@ enum Depth {
   DEPTH_QS_NO_CHECKS  = -1,
   DEPTH_QS_RECAPTURES = -5,
 
-  DEPTH_NONE = -6
+  DEPTH_NONE = -6,
+  DEPTH_MAX  = MAX_PLY
 };
 
 enum Square {