diff --git a/dev-python/tubes/tubes-0.2.0-r1.ebuild b/dev-python/tubes/tubes-0.2.0-r1.ebuild
index dcac352fe85b8..754db81540874 100644
--- a/dev-python/tubes/tubes-0.2.0-r1.ebuild
+++ b/dev-python/tubes/tubes-0.2.0-r1.ebuild
@@ -23,6 +23,6 @@ DEPEND="
 
 RDEPEND="${DEPEND}"
 
-PATCHES=( "$FILESDIR/remove-unnecessary-dep.patch")
+PATCHES=( "${FILESDIR}/remove-unnecessary-dep.patch")
 
 distutils_enable_tests pytest