diff --git a/crates/aiken-lsp/src/utils.rs b/crates/aiken-lsp/src/utils.rs
index fd6d445a..822e6d46 100644
--- a/crates/aiken-lsp/src/utils.rs
+++ b/crates/aiken-lsp/src/utils.rs
@@ -79,7 +79,7 @@ pub fn uri_to_module_name(uri: &url::Url, root: &Path) -> Option<String> {
         .ok()?
         .components()
         .skip(1)
-        .map(|c| c.as_os_str().to_string_lossy());
+        .map(|c| c.as_os_str().to_string_lossy().replace("-", "_"));
 
     let module_name = Itertools::intersperse(components, "/".into())
         .collect::<String>()