1 files changed, 1 insertions, 1 deletions
diff --git a/src/position.h b/src/position.h
index 2e10aebe2..60c762310 100644
--- a/src/position.h
+++ b/src/position.h
@@ -31,7 +31,7 @@
  */
 struct Position
 {
-    Position(int x0, int y0):
+    Position(const int x0, const int y0) :
         x(x0), y(y0)
     { }