diff --git a/host/hackrf-tools/src/hackrf_sweep.c b/host/hackrf-tools/src/hackrf_sweep.c
index 2edd68cf..ea482a21 100644
--- a/host/hackrf-tools/src/hackrf_sweep.c
+++ b/host/hackrf-tools/src/hackrf_sweep.c
@@ -245,7 +245,7 @@ int rx_callback(hackrf_transfer* transfer) {
 			pwr[i] = logPower(fftwOut[i], 1.0f / fftSize);
 		}
 		if(binary_output) {
-			float_freq = frequency + DEFAULT_SAMPLE_RATE_HZ / 4;
+			float_freq = frequency;
 			float_freq /= FREQ_ONE_MHZ;
 			fwrite(&float_freq, sizeof(float), 1, stdout);
 			fwrite(&pwr[1+(fftSize*5)/8], sizeof(float), fftSize/4, stdout);