diff --git a/src/bin/pbs2to3.rs b/src/bin/pbs2to3.rs
index a052ae3a8..9a18d7b2f 100644
--- a/src/bin/pbs2to3.rs
+++ b/src/bin/pbs2to3.rs
@@ -203,7 +203,7 @@ impl Checker {
             return Ok(());
         }
 
-        if !Path::new("/sys/firmware/efi").is_file() {
+        if !Path::new("/sys/firmware/efi").is_dir() {
             self.output
                 .log_skip("System booted in legacy-mode - no need for systemd-boot")?;
             return Ok(());