diff --git a/src/osmo-bts-litecell15/lc15bts_vty.c b/src/osmo-bts-litecell15/lc15bts_vty.c
index d0edc886b..d27ec2814 100644
--- a/src/osmo-bts-litecell15/lc15bts_vty.c
+++ b/src/osmo-bts-litecell15/lc15bts_vty.c
@@ -88,7 +88,7 @@ DEFUN(cfg_phy_dsp_trace_f, cfg_phy_dsp_trace_f_cmd,
 	unsigned int flag;
 
 	flag = get_string_value(lc15bts_tracef_names, argv[1]);
-	pinst->u.lc15.dsp_trace_f |= ~flag;
+	pinst->u.lc15.dsp_trace_f |= flag;
 
 	return CMD_SUCCESS;
 }
diff --git a/src/osmo-bts-oc2g/oc2gbts_vty.c b/src/osmo-bts-oc2g/oc2gbts_vty.c
index 4c3915bae..1f092dde4 100644
--- a/src/osmo-bts-oc2g/oc2gbts_vty.c
+++ b/src/osmo-bts-oc2g/oc2gbts_vty.c
@@ -114,7 +114,7 @@ DEFUN(cfg_phy_dsp_trace_f, cfg_phy_dsp_trace_f_cmd,
 	unsigned int flag;
 
 	flag = get_string_value(oc2gbts_tracef_names, argv[1]);
-	pinst->u.oc2g.dsp_trace_f |= ~flag;
+	pinst->u.oc2g.dsp_trace_f |= flag;
 
 	return CMD_SUCCESS;
 }
diff --git a/src/osmo-bts-sysmo/sysmobts_vty.c b/src/osmo-bts-sysmo/sysmobts_vty.c
index b105bf4d6..3199c8e22 100644
--- a/src/osmo-bts-sysmo/sysmobts_vty.c
+++ b/src/osmo-bts-sysmo/sysmobts_vty.c
@@ -179,7 +179,7 @@ DEFUN(cfg_phy_dsp_trace_f, cfg_phy_dsp_trace_f_cmd,
 	unsigned int flag;
 
 	flag = get_string_value(femtobts_tracef_names, argv[1]);
-	pinst->u.sysmobts.dsp_trace_f |= ~flag;
+	pinst->u.sysmobts.dsp_trace_f |= flag;
 
 	return CMD_SUCCESS;
 }