diff --git a/src/Common.js b/src/Common.js
index ba4ff55c..f8860c91 100644
--- a/src/Common.js
+++ b/src/Common.js
@@ -16,7 +16,7 @@ export { format_time, Time, TitleLine };
 
 export const API_BASE = `${process.env.REACT_APP_BACKEND || '/'}_api/v1`;
 export const API_BASE_2 = `${process.env.REACT_APP_BACKEND || '/'}_api/v2`;
-export const STORAGE_BASE = `${process.env.REACT_APP_STORAGE || ''}`;
+export const STORAGE_BASE = `${process.env.REACT_APP_STORAGE || '/'}`;
 
 // https://stackoverflow.com/questions/3446170/escape-string-for-use-in-javascript-regex
 function escape_regex(string) {
diff --git a/src/UserAction.js b/src/UserAction.js
index 2e0f6915..617943e9 100644
--- a/src/UserAction.js
+++ b/src/UserAction.js
@@ -679,7 +679,7 @@ export class PostForm extends Component {
 
   update_text_after_upload(data) {
     const { file_name, file_type } = this.state;
-    let url = `${STORAGE_BASE}/${data.path}?filename=${encodeURIComponent(
+    let url = `${STORAGE_BASE}${data.path}?filename=${encodeURIComponent(
       file_name,
     )}&filetype=${encodeURIComponent(file_type)}`;
     let new_text =