diff --git a/firmware/common/tuning.c b/firmware/common/tuning.c
index ef13efd6..342b2d26 100644
--- a/firmware/common/tuning.c
+++ b/firmware/common/tuning.c
@@ -29,7 +29,7 @@
 
 #define FREQ_ONE_MHZ     (1000*1000)
 
-#define MIN_LP_FREQ_MHZ (5)
+#define MIN_LP_FREQ_MHZ (0)
 #define MAX_LP_FREQ_MHZ (2150)
 
 #define MIN_BYPASS_FREQ_MHZ (2150)
diff --git a/host/hackrf-tools/src/hackrf_transfer.c b/host/hackrf-tools/src/hackrf_transfer.c
index bc2c5511..69585157 100644
--- a/host/hackrf-tools/src/hackrf_transfer.c
+++ b/host/hackrf-tools/src/hackrf_transfer.c
@@ -84,7 +84,7 @@ int gettimeofday(struct timeval *tv, void* ignored)
 #define FREQ_ONE_MHZ (1000000ull)
 
 #define DEFAULT_FREQ_HZ (900000000ull) /* 900MHz */
-#define FREQ_MIN_HZ	(5000000ull) /* 5MHz */
+#define FREQ_MIN_HZ	(0ull) /* 0 Hz */
 #define FREQ_MAX_HZ	(6800000000ull) /* 6800MHz */
 
 #define DEFAULT_SAMPLE_RATE_HZ (10000000) /* 10MHz default sample rate */