diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3ca7b9a4..3d74e3a2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -30,6 +30,10 @@ will consitute of a breaking change warranting a new major release:
 - The STR handler can now handle the COM error reply and triggers an low severity event accordingly.
 - Add SCEX handler for EM.
 
+## Fixed
+
+- SUS dummy handler went to `MODE_NORMAL` for ON commands.
+
 # [v6.1.0] 2023-07-13
 
 - `eive-tmtc`: v5.2.0
diff --git a/dummies/SusDummy.cpp b/dummies/SusDummy.cpp
index 75e36676..3e03f198 100644
--- a/dummies/SusDummy.cpp
+++ b/dummies/SusDummy.cpp
@@ -5,7 +5,7 @@ SusDummy::SusDummy(object_id_t objectId, object_id_t comif, CookieIF *comCookie)
 
 SusDummy::~SusDummy() {}
 
-void SusDummy::doStartUp() { setMode(MODE_NORMAL); }
+void SusDummy::doStartUp() { setMode(MODE_ON); }
 
 void SusDummy::doShutDown() { setMode(MODE_OFF); }