diff --git a/python-cramjam.spec b/python-cramjam.spec
index 4919113..0fff062 100644
--- a/python-cramjam.spec
+++ b/python-cramjam.spec
@@ -131,7 +131,6 @@ done
 
 
 %build
-export RUSTFLAGS='%{build_rustflags}'
 %cargo_license_summary
 %{cargo_license} > LICENSES.dependencies
 %pyproject_wheel