diff --git a/back/.eslintrc.json b/back/.eslintrc.json
index 3aab37d9..0b5e39da 100644
--- a/back/.eslintrc.json
+++ b/back/.eslintrc.json
@@ -25,6 +25,7 @@
     ],
     "rules": {
         "no-unused-vars": "off",
+        "@typescript-eslint/no-floating-promises": "error",
         "@typescript-eslint/no-explicit-any": "error"
     }
 }
diff --git a/back/src/Server/server/formdata.ts b/back/src/Server/server/formdata.ts
index 66e51db4..0e17de78 100644
--- a/back/src/Server/server/formdata.ts
+++ b/back/src/Server/server/formdata.ts
@@ -47,7 +47,10 @@ function formData(
             if (typeof options.tmpDir === "string") {
                 if (typeof options.filename === "function") filename = options.filename(filename);
                 const fileToSave = join(options.tmpDir, filename);
-                mkdirp(dirname(fileToSave));
+                mkdirp(dirname(fileToSave)).then(
+                    () => {},
+                    () => {}
+                );
 
                 file.pipe(createWriteStream(fileToSave));
                 value.filePath = fileToSave;