diff --git a/rust-zram-generator.spec b/rust-zram-generator.spec
index dabef80..c55fe7c 100644
--- a/rust-zram-generator.spec
+++ b/rust-zram-generator.spec
@@ -21,6 +21,7 @@ BuildArch:      noarch
 
 BuildRequires:  rust-packaging
 BuildRequires:  systemd-rpm-macros
+BuildRequires:  /usr/bin/ronn
 
 %global _description %{expand:
 This is a systemd unit generator that enables swap on zram.
@@ -96,7 +97,6 @@ cp -a %{S:1} .
 
 %generate_buildrequires
 %cargo_generate_buildrequires
-echo '/usr/bin/ronn'
 
 %build
 %cargo_build