diff --git a/test/Jamfile.v2 b/test/Jamfile.v2
index 1e6c037..527a2d1 100644
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -5,6 +5,6 @@ test-suite "parameter"
      [ run sfinae.cpp ]
      [ run macros.cpp ]
      [ run unnamed.cpp ]
-     [ run efficiency.cpp ]
+     [ run efficiency.cpp : : : <variant>release ]
      [ compile unwrap_cv_reference.cpp ]
   ;