diff --git a/android_class_shadowing_scanner/__init__.py b/android_class_shadowing_scanner/__init__.py
index dac4fe6..d0d935e 100644
--- a/android_class_shadowing_scanner/__init__.py
+++ b/android_class_shadowing_scanner/__init__.py
@@ -320,7 +320,7 @@ def check_smali():
                     smalli_dirs.append(d / "apktool_out" / "smali")
                 else:
                     smalli_dirs.append(
-                        d / "apktool_out" / "smali_" + dex.removesuffix(".dex")
+                        d / "apktool_out" / ("smali_" + dex.removesuffix(".dex"))
                     )
             dist_dup_classes = set()
             for cl in data[sha256]["duplicated_classes"]: