diff --git a/indexer/point_to_int64.cpp b/indexer/point_to_int64.cpp
index 70018646bc..bc0e429d88 100644
--- a/indexer/point_to_int64.cpp
+++ b/indexer/point_to_int64.cpp
@@ -14,7 +14,7 @@
 namespace
 {
 
-inline double CoordSize(uint32_t coordBits) { return (1 << coordBits); }
+inline double CoordSize(uint32_t coordBits) { return (1 << coordBits) - 1; }
 
 }