diff --git a/src/iec61850/server/impl/ied_server.c b/src/iec61850/server/impl/ied_server.c
index 16ec66f4..05a7eedd 100644
--- a/src/iec61850/server/impl/ied_server.c
+++ b/src/iec61850/server/impl/ied_server.c
@@ -1692,6 +1692,6 @@ void
 IedServer_setGooseInterfaceId(IedServer self, const char* interfaceId)
 {
 #if (CONFIG_INCLUDE_GOOSE_SUPPORT == 1)
-    self->mmsMapping->gooseInterfaceId = interfaceId;
+    self->mmsMapping->gooseInterfaceId = StringUtils_copyString(interfaceId);
 #endif
 }
diff --git a/src/iec61850/server/mms_mapping/mms_mapping.c b/src/iec61850/server/mms_mapping/mms_mapping.c
index aa469f8f..d1fd10cd 100644
--- a/src/iec61850/server/mms_mapping/mms_mapping.c
+++ b/src/iec61850/server/mms_mapping/mms_mapping.c
@@ -2014,6 +2014,7 @@ MmsMapping_destroy(MmsMapping* self)
 
 #if (CONFIG_INCLUDE_GOOSE_SUPPORT == 1)
     LinkedList_destroyDeep(self->gseControls, (LinkedListValueDeleteFunction) MmsGooseControlBlock_destroy);
+    if (self->gooseInterfaceId) GLOBAL_FREEMEM(self->gooseInterfaceId);
 #endif
 
 #if (CONFIG_IEC61850_SAMPLED_VALUES_SUPPORT == 1)