diff --git a/host/hackrf-tools/src/hackrf_transfer.c b/host/hackrf-tools/src/hackrf_transfer.c
index 5dd9633b..af100af5 100644
--- a/host/hackrf-tools/src/hackrf_transfer.c
+++ b/host/hackrf-tools/src/hackrf_transfer.c
@@ -627,7 +627,7 @@ int main(int argc, char** argv) {
 		return EXIT_FAILURE;
 	}
 
-	printf("call hackrf_set_freq(%lu Hz/%.03f MHz)\n", freq_hz, ((float)freq_hz/(float)FREQ_ONE_MHZ) );
+	printf("call hackrf_set_freq(%lu Hz/%.03f MHz)\n", freq_hz, ((double)freq_hz/(double)FREQ_ONE_MHZ) );
 	result = hackrf_set_freq(device, freq_hz);
 	if( result != HACKRF_SUCCESS ) {
 		printf("hackrf_set_freq() failed: %s (%d)\n", hackrf_error_name(result), result);