diff --git a/armsrc/lfops.c b/armsrc/lfops.c
index 76e0147f0..8481c5d6f 100644
--- a/armsrc/lfops.c
+++ b/armsrc/lfops.c
@@ -400,7 +400,8 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
 	int i = 0;
 	uint8_t *buf = BigBuf_get_addr();
 
-	FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT | FPGA_LF_EDGE_DETECT_TOGGLE_MODE );
+	//FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT | FPGA_LF_EDGE_DETECT_TOGGLE_MODE );
+	FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT);
 	SpinDelay(20);
 	
 	// set frequency,  get values from 'lf config' command