diff --git a/src/onedrive.d b/src/onedrive.d
index 0fc82ab0..8204d843 100644
--- a/src/onedrive.d
+++ b/src/onedrive.d
@@ -1158,8 +1158,13 @@ final class OneDriveApi
 	{
 		// Threshold for displaying download bar
 		long thresholdFileSize = 4 * 2^^20; // 4 MiB
-		// open file as write in binary mode
-		auto file = File(filename, "wb");
+		
+		// To support marking of partially-downloaded files, 
+		string originalFilename = filename;
+		string downloadFilename = filename ~ ".partial";
+		
+		// open downloadFilename as write in binary mode
+		auto file = File(downloadFilename, "wb");
 
 		// function scopes
 		scope(exit) {
@@ -1253,6 +1258,9 @@ final class OneDriveApi
 			}
 		}
 
+		// Rename downloaded file
+		rename(downloadFilename, originalFilename);
+
 		// Check the HTTP response code, which, if a 429, will also check response headers
 		checkHttpCode();
 	}