diff --git a/src/onedrive.d b/src/onedrive.d
index 7f76a30a..ad842a58 100644
--- a/src/onedrive.d
+++ b/src/onedrive.d
@@ -225,7 +225,7 @@ final class OneDriveApi
 			}
 		}
 		// match the authorization code
-		auto c = matchFirst(response, r"(?:[\?&]code=)([\w\d-]+)");
+		auto c = matchFirst(response, r"(?:[\?&]code=)([\w\d-.]+)");
 		if (c.empty) {
 			log.log("Invalid uri");
 			return false;