diff --git a/src/symbols/tls/key.rs b/src/symbols/tls/key.rs
index e819111..2bd440c 100644
--- a/src/symbols/tls/key.rs
+++ b/src/symbols/tls/key.rs
@@ -43,7 +43,7 @@ impl<C: CommandRunner> Symbol for TlsKey<'_, C> {
       return Ok(false);
     }
 
-    let output = self.command_runner.get_output(
+    let stdout = self.command_runner.get_output(
       "openssl",
       &[
         OsStr::new("rsa"),
@@ -54,7 +54,7 @@ impl<C: CommandRunner> Symbol for TlsKey<'_, C> {
         "-text".as_ref(),
       ],
     )?;
-    Ok(output.starts_with(format!("Private-Key: ({} bit)\n", self.get_bytes()).as_bytes()))
+    Ok(stdout.ends_with("RSA key ok\n".as_bytes()))
   }
 
   fn execute(&self) -> Result<(), Box<dyn Error>> {