diff --git a/boa/src/builtins/string/mod.rs b/boa/src/builtins/string/mod.rs
index aa757d225a..b2ee8972e0 100644
--- a/boa/src/builtins/string/mod.rs
+++ b/boa/src/builtins/string/mod.rs
@@ -918,13 +918,17 @@ impl String {
             return Value::from(primitive);
         }
 
-        let filter = fill_string.as_deref().unwrap_or(" ");
+        let filler = fill_string.as_deref().unwrap_or(" ");
+
+        if filler.is_empty() {
+            return Value::from(primitive);
+        }
 
         let fill_len = max_length.wrapping_sub(primitive_length);
         let mut fill_str = StdString::new();
 
         while fill_str.len() < fill_len as usize {
-            fill_str.push_str(filter);
+            fill_str.push_str(filler);
         }
         // Cut to size max_length
         let concat_fill_str: StdString = fill_str.chars().take(fill_len as usize).collect();
diff --git a/test_ignore.txt b/test_ignore.txt
index 25b45c8e45..c3a20814ff 100644
--- a/test_ignore.txt
+++ b/test_ignore.txt
@@ -12,7 +12,6 @@ feature:json-modules
 // These seem to run forever:
 arg-length-exceeding-integer-limit
 15.4.4.19-8-c-ii-1
-fill-string-empty
 length-boundaries
 throws-if-integer-limit-exceeded