diff --git a/qa/common/geometry/test_shape_poly_set_distance.cpp b/qa/common/geometry/test_shape_poly_set_distance.cpp
index 79de9620a1..5917a9a59f 100644
--- a/qa/common/geometry/test_shape_poly_set_distance.cpp
+++ b/qa/common/geometry/test_shape_poly_set_distance.cpp
@@ -31,6 +31,8 @@
 #include <qa_utils/geometry/poly_set_construction.h>
 #include <qa_utils/geometry/seg_construction.h>
 
+#include <unit_test_utils/geometry.h>
+
 /**
  * Declares the Boost test suite fixture.
  */
@@ -141,7 +143,7 @@ BOOST_AUTO_TEST_CASE( SegDistance )
             int dist = polyset.Distance( c.m_seg, c.m_seg_width );
 
             // right answer?
-            BOOST_CHECK_EQUAL( dist, c.m_exp_dist );
+            BOOST_CHECK_PREDICATE( KI_TEST::IsWithin<int>, ( dist )( c.m_exp_dist )( 1 ) );
         }
     }
 }
diff --git a/qa/unit_test_utils/include/unit_test_utils/geometry.h b/qa/unit_test_utils/include/unit_test_utils/geometry.h
index 2f8be6f707..3d189cc6d0 100644
--- a/qa/unit_test_utils/include/unit_test_utils/geometry.h
+++ b/qa/unit_test_utils/include/unit_test_utils/geometry.h
@@ -14,7 +14,7 @@
  *
  * TODO: convert to boost_test_print_type when Boost minver > 1.64
  */
-std::ostream& operator<<( std::ostream& os, const BOX2I& aBox )
+inline std::ostream& operator<<( std::ostream& os, const BOX2I& aBox )
 {
     os << "BOX[ " << aBox.GetOrigin() << " + " << aBox.GetSize() << " ]";
     return os;