diff --git a/rustlings-macros/src/lib.rs b/rustlings-macros/src/lib.rs
index d8da666e..d95a93a6 100644
--- a/rustlings-macros/src/lib.rs
+++ b/rustlings-macros/src/lib.rs
@@ -15,8 +15,8 @@ pub fn include_files(_: TokenStream) -> TokenStream {
     let mut files = Vec::with_capacity(8);
     let mut dirs = Vec::with_capacity(128);
 
-    for entry in read_dir("exercises").expect("Failed to open the exercises directory") {
-        let entry = entry.expect("Failed to read the exercises directory");
+    for entry in read_dir("exercises").expect("Failed to open the `exercises` directory") {
+        let entry = entry.expect("Failed to read the `exercises` directory");
 
         if entry.file_type().unwrap().is_file() {
             let path = entry.path();
@@ -46,13 +46,6 @@ pub fn include_files(_: TokenStream) -> TokenStream {
                 return None;
             }
 
-            if path.extension() != Some("rs".as_ref()) {
-                panic!(
-                    "Found {} but expected only README.md and .rs files",
-                    path.display(),
-                );
-            }
-
             Some(path_to_string(path))
         });
 
diff --git a/src/info_file.rs b/src/info_file.rs
index 18e77b9f..879609e3 100644
--- a/src/info_file.rs
+++ b/src/info_file.rs
@@ -64,14 +64,6 @@ impl InfoFile {
             bail!("{NO_EXERCISES_ERR}");
         }
 
-        let mut names_set = hashbrown::HashSet::with_capacity(slf.exercises.len());
-        for exercise in &slf.exercises {
-            if !names_set.insert(exercise.name.as_str()) {
-                bail!("Exercise names must all be unique!")
-            }
-        }
-        drop(names_set);
-
         Ok(slf)
     }
 }