diff --git a/hydros-assets/hydros-assets.spec b/hydros-assets/hydros-assets.spec
index 1278639..3e23e30 100644
--- a/hydros-assets/hydros-assets.spec
+++ b/hydros-assets/hydros-assets.spec
@@ -17,7 +17,7 @@ Source0:        source.tar.gz
 
 %install
 %__rm -rf %{buildroot}
-%__mkdir -p %{buildroot}${_datarootdir}/hydros
+%__mkdir -p %{buildroot}%{_datarootdir}/hydros
 %__mv %{_builddir}/* %{buildroot}%{_datarootdir}/hydros
 #install -Dm0444 -t %{buildroot}%{_datarootdir}/hydros/ %{_builddir}/default-background.png