diff --git a/src/protocol/client.ts b/src/protocol/client.ts
index d77409b..6dccd85 100644
--- a/src/protocol/client.ts
+++ b/src/protocol/client.ts
@@ -693,9 +693,12 @@ export class ViceClient {
   // Snapshot methods
   async saveSnapshot(filename: string): Promise<void> {
     const filenameBuffer = Buffer.from(filename, "utf8");
-    const body = Buffer.alloc(1 + filenameBuffer.length);
-    body[0] = filenameBuffer.length;
-    filenameBuffer.copy(body, 1);
+    // VICE Dump expects: saveROMs(1) + saveDisks(1) + filenameLen(1) + filename
+    const body = Buffer.alloc(3 + filenameBuffer.length);
+    body[0] = 1; // SR: save ROMs = true
+    body[1] = 0; // SD: save disks = false
+    body[2] = filenameBuffer.length;
+    filenameBuffer.copy(body, 3);
     await this.sendCommand(Command.Dump, body);
   }