diff --git a/lib/commands/api.js b/lib/commands/api.js
index 259e4d9..04a9ff3 100644
--- a/lib/commands/api.js
+++ b/lib/commands/api.js
@@ -108,7 +108,7 @@ exports.setDataStreaming = function(sensorRateDivisor, frames, mask, packetCount
   packet.DATA.writeUInt32BE(mask, 4);
   packet.DATA.writeUInt8(packetCount, 8);
   if (mask2) {
-    packet.DATA.writeUInt32BE(sensorRateDivisor, 9);
+    packet.DATA.writeUInt32BE(mask2, 9);
   }
   var result = packetBuilder(packet);
   return result;