diff --git a/dev-python/trimesh/trimesh-4.7.1.ebuild b/dev-python/trimesh/trimesh-4.7.1.ebuild
index 99ca4bafa6284..25a0e59aa0b7f 100644
--- a/dev-python/trimesh/trimesh-4.7.1.ebuild
+++ b/dev-python/trimesh/trimesh-4.7.1.ebuild
@@ -61,7 +61,7 @@ EPYTEST_IGNORE=(
 )
 
 EPYTEST_PLUGINS=()
-EPYTEST_TIMEOUT=1800
+: ${EPYTEST_TIMEOUT:=1800}
 EPYTEST_XDIST=1
 
 distutils_enable_tests pytest