diff --git a/libs/wingc/src/parser.rs b/libs/wingc/src/parser.rs
index 5e7436580c6..2d0761ecf67 100644
--- a/libs/wingc/src/parser.rs
+++ b/libs/wingc/src/parser.rs
@@ -735,7 +735,7 @@ impl<'s> Parser<'s> {
 			// we need to inspect the npm dependency to figure out if it's a JSII library or a Wing library
 			// first, find where the package.json is located
 			let module_name = module_symbol.name[1..module_symbol.name.len() - 1].to_string();
-			let source_dir = Path::new(&self.source_name).parent().unwrap().to_str().unwrap();
+			let source_dir = Path::new(&self.source_name).parent().unwrap();
 			let module_dir =
 				wingii::util::package_json::find_dependency_directory(&module_name, &source_dir).ok_or_else(|| {
 					self
diff --git a/libs/wingc/src/type_check.rs b/libs/wingc/src/type_check.rs
index 175be9c83e7..3787929082e 100644
--- a/libs/wingc/src/type_check.rs
+++ b/libs/wingc/src/type_check.rs
@@ -4009,7 +4009,7 @@ impl<'a> TypeChecker<'a> {
 
 				assembly_name
 			} else {
-				let source_dir = self.source_path.parent().unwrap().to_str().unwrap();
+				let source_dir = self.source_path.parent().unwrap();
 				let assembly_name = match self.jsii_types.load_dep(library_name.as_str(), source_dir) {
 					Ok(name) => name,
 					Err(type_error) => {
diff --git a/libs/wingii/src/lib.rs b/libs/wingii/src/lib.rs
index 70cfe0974ab..bd4de7b7364 100644
--- a/libs/wingii/src/lib.rs
+++ b/libs/wingii/src/lib.rs
@@ -178,6 +178,7 @@ pub mod type_system {
 	use crate::util::package_json;
 	use crate::Result;
 	use std::collections::HashMap;
+	use std::path::Path;
 
 	pub struct TypeSystem {
 		assemblies: HashMap<String, Assembly>,
@@ -240,10 +241,11 @@ pub mod type_system {
 			Ok(name)
 		}
 
-		pub fn load_dep(&mut self, dep: &str, search_start: &str) -> Result<AssemblyName> {
+		pub fn load_dep(&mut self, dep: &str, search_start: &Path) -> Result<AssemblyName> {
 			let module_dir = package_json::find_dependency_directory(dep, search_start).ok_or(format!(
 				"Unable to load \"{}\": Module not found in \"{}\"",
-				dep, search_start
+				dep,
+				search_start.display()
 			))?;
 			self.load_module(&module_dir)
 		}
@@ -279,7 +281,7 @@ pub mod type_system {
 			let deps = package_json::dependencies_of(&package);
 			for dep in deps {
 				if !bundled.contains(&dep) {
-					let dep_dir = package_json::find_dependency_directory(&dep, &module_directory).ok_or(format!(
+					let dep_dir = package_json::find_dependency_directory(&dep, &Path::new(&module_directory)).ok_or(format!(
 						"Unable to load \"{}\": Module not found from \"{}\"",
 						dep, module_directory
 					))?;
diff --git a/libs/wingii/src/util.rs b/libs/wingii/src/util.rs
index fc4b5153873..4e53d230478 100644
--- a/libs/wingii/src/util.rs
+++ b/libs/wingii/src/util.rs
@@ -76,8 +76,8 @@ pub mod package_json {
 		})
 	}
 
-	pub fn find_dependency_directory(dependency_name: &str, search_start: &str) -> Option<String> {
-		let entrypoint = resolve_from(dependency_name, Path::new(search_start));
+	pub fn find_dependency_directory(dependency_name: &str, search_start: &Path) -> Option<String> {
+		let entrypoint = resolve_from(dependency_name, search_start);
 		let entrypoint = entrypoint.ok()?;
 		let dep_pkg_json_path = find_package_json_up(dependency_name, entrypoint);
 		let dep_pkg_json_path = dep_pkg_json_path?;