diff --git a/nixos/modules/system/boot/loader/systemd-boot/systemd-boot-builder.py b/nixos/modules/system/boot/loader/systemd-boot/systemd-boot-builder.py
index 0ad967526ba5..68da20615917 100644
--- a/nixos/modules/system/boot/loader/systemd-boot/systemd-boot-builder.py
+++ b/nixos/modules/system/boot/loader/systemd-boot/systemd-boot-builder.py
@@ -181,16 +181,16 @@ def remove_old_entries(gens: List[SystemIdentifier]) -> None:
         known_paths.append(copy_from_profile(*gen, "kernel", True))
         known_paths.append(copy_from_profile(*gen, "initrd", True))
     for path in glob.iglob("@efiSysMountPoint@/loader/entries/nixos*-generation-[1-9]*.conf"):
+        if rex_profile.match(path):
+            prof = rex_profile.sub(r"\1", path)
+        else:
+            prof = None
         try:
-            if rex_profile.match(path):
-                prof = rex_profile.sub(r"\1", path)
-            else:
-                prof = None
             gen_number = int(rex_generation.sub(r"\1", path))
-            if not (prof, gen_number, None) in gens:
-                os.unlink(path)
         except ValueError:
-            pass
+            continue
+        if not (prof, gen_number, None) in gens:
+            os.unlink(path)
     for path in glob.iglob("@efiSysMountPoint@/efi/nixos/*"):
         if not path in known_paths and not os.path.isdir(path):
             os.unlink(path)