diff --git a/hash/doc/hash.qbk b/hash/doc/hash.qbk
index d68e765..eb574d6 100644
--- a/hash/doc/hash.qbk
+++ b/hash/doc/hash.qbk
@@ -209,7 +209,7 @@ Say you have a point class, representing a two dimensional location:
 
         bool operator==(point const& other) const
         {
-            return x = other.x && y == other.y;
+            return x == other.x && y == other.y;
         }
     };
 
diff --git a/hash/examples/point.cpp b/hash/examples/point.cpp
index 30e6080..b295cc5 100644
--- a/hash/examples/point.cpp
+++ b/hash/examples/point.cpp
@@ -20,7 +20,7 @@ public:
 
     bool operator==(point const& other) const
     {
-        return x = other.x && y == other.y;
+        return x == other.x && y == other.y;
     }
 
     friend std::size_t hash_value(point const& p)
@@ -49,3 +49,4 @@ int main()
     assert(point_hasher(p1) != point_hasher(p2));
     assert(point_hasher(p1) != point_hasher(p3));
 }
+