diff --git a/firmware/application/file.hpp b/firmware/application/file.hpp
index 34466c4c0..d8c711f28 100644
--- a/firmware/application/file.hpp
+++ b/firmware/application/file.hpp
@@ -37,11 +37,7 @@ namespace std {
 namespace filesystem {
 
 struct filesystem_error {
-	const BYTE err;
-
-	operator bool() const {
-		return err != FR_OK;
-	}
+	const uint32_t err;
 
 	std::string what() const;
 };
@@ -129,6 +125,14 @@ public:
 		return err == FR_OK;
 	}
 
+	bool bad() const {
+		return err != FR_OK;
+	}
+
+	std::filesystem::filesystem_error error() const {
+		return { err };
+	}
+
 	bool read(void* const data, const size_t bytes_to_read);
 	bool write(const void* const data, const size_t bytes_to_write);