diff --git a/buildpacks/ruby/src/layers/metrics_agent_install.rs b/buildpacks/ruby/src/layers/metrics_agent_install.rs
index d6594290..7aad6b40 100644
--- a/buildpacks/ruby/src/layers/metrics_agent_install.rs
+++ b/buildpacks/ruby/src/layers/metrics_agent_install.rs
@@ -82,8 +82,8 @@ impl Layer for MetricsAgentInstall {
         let bin_dir = layer_path.join("bin");
 
         let mut timer = self.section.say_with_inline_timer("Downloading");
-        let agentmon = install_agentmon(&bin_dir).map_err(RubyBuildpackError::MetricsAgentError)?;
-
+        let agentmon =
+            agentmon_download(&bin_dir).map_err(RubyBuildpackError::MetricsAgentError)?;
         timer.done();
 
         self.section.say("Writing scripts");
@@ -196,14 +196,13 @@ fn write_execd_script(
     Ok(execd)
 }
 
-fn install_agentmon(dir: &Path) -> Result<PathBuf, MetricsAgentInstallError> {
-    let agentmon = download_untar(DOWNLOAD_URL, &dir).map(|_| dir.join("agentmon"))?;
+fn agentmon_download(dir: &Path) -> Result<PathBuf, MetricsAgentInstallError> {
+    download_to_dir(DOWNLOAD_URL, dir)?;
 
-    chmod_plus_x(&agentmon).map_err(MetricsAgentInstallError::PermissionError)?;
-    Ok(agentmon)
+    Ok(dir.join("agentmon"))
 }
 
-fn download_untar(
+fn download_to_dir(
     url: impl AsRef<str>,
     destination: &Path,
 ) -> Result<(), MetricsAgentInstallError> {
@@ -214,6 +213,9 @@ fn download_untar(
 
     untar(agentmon_tgz.path(), destination)?;
 
+    chmod_plus_x(&destination.join("agentmon"))
+        .map_err(MetricsAgentInstallError::PermissionError)?;
+
     Ok(())
 }