diff --git a/tools/tune/src/src_small_int32.m b/tools/tune/src/src_small_int32.m
index ae787789a..4e4866b5e 100644
--- a/tools/tune/src/src_small_int32.m
+++ b/tools/tune/src/src_small_int32.m
@@ -23,6 +23,6 @@ cfg.profile = 'small';
 cfg.quality = 1.0;
 cfg.thdn = -90;
 cfg.speed = 0;
-cfg.gain = -1; % Make gain -1 dB
+cfg.gain = 0;
 
 src_generate(fs1, fs2, fs_matrix, cfg);
diff --git a/tools/tune/src/src_std_int32.m b/tools/tune/src/src_std_int32.m
index 245fcef45..dd6f62f5c 100644
--- a/tools/tune/src/src_std_int32.m
+++ b/tools/tune/src/src_std_int32.m
@@ -52,6 +52,6 @@ cfg.profile = 'std';
 cfg.quality = 1.0;
 cfg.thdn = -90;
 cfg.speed = 0;
-cfg.gain = -1; % Make gain -1 dB
+cfg.gain = 0;
 
 src_generate(fs1, fs2, fs_matrix, cfg);
diff --git a/tools/tune/src/src_tiny_int16.m b/tools/tune/src/src_tiny_int16.m
index da1337feb..bedab896a 100644
--- a/tools/tune/src/src_tiny_int16.m
+++ b/tools/tune/src/src_tiny_int16.m
@@ -43,6 +43,6 @@ cfg.profile = 'tiny';
 cfg.quality = 0.40;
 cfg.thdn = -90;
 cfg.speed = 1;
-cfg.gain = -1; % Make gain -1 dB
+cfg.gain = 0;
 
 src_generate(fs1, fs2, fsm, cfg);