diff --git a/src/modules/unsquashfs/main.py b/src/modules/unsquashfs/main.py
index 6f51a4eac..37bb4be51 100644
--- a/src/modules/unsquashfs/main.py
+++ b/src/modules/unsquashfs/main.py
@@ -107,7 +107,7 @@ class UnsquashOperation:
                 sqfslist = subprocess.check_output(["unsquashfs",
                                                     "-l",
                                                     entry.source])
-                filescount = sqfslist.splitlines().count()
+                filescount = len(sqfslist.splitlines())
                 self.unpackstatus[entry.source].total = filescount
 
                 imgbasename = os.path.splitext(