diff --git a/webapp/src/services/api/matrix.ts b/webapp/src/services/api/matrix.ts
index 9b2d4f5213..1eff05f7c9 100644
--- a/webapp/src/services/api/matrix.ts
+++ b/webapp/src/services/api/matrix.ts
@@ -97,7 +97,7 @@ export const editMatrix = async (
   matrixEdit: MatrixEditDTO[],
 ): Promise<void> => {
   const res = await client.put(
-    `/v1/studies/${sid}/matrix?path=${path}`,
+    `/v1/studies/${sid}/matrix?path=${encodeURIComponent(path)}`,
     matrixEdit,
   );
   return res.data;