diff --git a/src/config.rs b/src/config.rs
index 27ceeaf..5f34a32 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -104,7 +104,7 @@ impl NodeTypesConfig {
             node_type = node_type.extend(conf);
         }
 
-        if let Some(conf) = self.extension.get(&node.extension) {
+        if let (Some(conf), false) = (self.extension.get(&node.extension), node.is_dir) {
             node_type = node_type.extend(conf);
         }
 
diff --git a/src/lua/util.rs b/src/lua/util.rs
index 63abbe9..6d761e3 100644
--- a/src/lua/util.rs
+++ b/src/lua/util.rs
@@ -160,7 +160,7 @@ pub fn is_dir<'a>(util: Table<'a>, lua: &Lua) -> Result<Table<'a>> {
 /// ```
 pub fn is_file<'a>(util: Table<'a>, lua: &Lua) -> Result<Table<'a>> {
     let func =
-        lua.create_function(move |_, path: String| Ok(PathBuf::from(path).is_dir()))?;
+        lua.create_function(move |_, path: String| Ok(PathBuf::from(path).is_file()))?;
     util.set("is_file", func)?;
     Ok(util)
 }