diff --git a/src/lib.rs b/src/lib.rs
index 4c1a2ff..bc46c89 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -371,16 +371,23 @@ impl Movies {
     /// If there is a yearless movie and one or more movies with a year exist, then the yearless
     /// movie will be removed
     pub fn duplicate_candidates(&self) -> Vec<(&Movie, Vec<&Movie>)> {
+        lazy_static! {
+            static ref MULTIPLE_SPACES: Regex = Regex::new(r"\s+").unwrap();
+        }
         let date_re = Regex::new(r"\(\d{4}\)$").unwrap();
         let mut movie_counter = HashMap::new();
         let mut movies_without_date_counter = HashMap::new();
         for m in &self.movies {
             let (path, _cmd) = m.files.first().unwrap();
-            let parent = clean_path_parent(path)
-                .to_string_lossy()
-                .to_ascii_lowercase()
-                .replace("-", " ")
-                .replace("'", "")
+            let parent = MULTIPLE_SPACES
+                .replace_all(
+                    &clean_path_parent(path)
+                        .to_string_lossy()
+                        .to_ascii_lowercase()
+                        .replace("-", " ")
+                        .replace("'", " "),
+                    " ",
+                )
                 .to_string();
             if date_re.is_match(&parent) {
                 movie_counter.entry(parent).or_insert(Vec::new()).push(m);