diff --git a/src/tt.cpp b/src/tt.cpp
index c88aef48..5c842db8 100644
--- a/src/tt.cpp
+++ b/src/tt.cpp
@@ -206,5 +206,5 @@ TTEntry::TTEntry() {
 
 TTEntry::TTEntry(Key k, Value v, ValueType t, Depth d, Move m,
                  int generation) :
-  key_ (k), data((m & 0x7FFFF) | (t << 20) | (generation << 23)),
+  key_ (k), data((m & 0x1FFFF) | (t << 20) | (generation << 23)),
   value_(int16_t(v)), depth_(int16_t(d)) {}
diff --git a/src/tt.h b/src/tt.h
index 02913efe..31fc1fbc 100644
--- a/src/tt.h
+++ b/src/tt.h
@@ -43,7 +43,7 @@ public:
   TTEntry(Key k, Value v, ValueType t, Depth d, Move m, int generation);
   Key key() const { return key_; }
   Depth depth() const { return Depth(depth_); }
-  Move move() const { return Move(data & 0x7FFFF); }
+  Move move() const { return Move(data & 0x1FFFF); }
   Value value() const { return Value(value_); }
   ValueType type() const { return ValueType((data >> 20) & 7); }
   int generation() const { return (data >> 23); }