diff --git a/LDMP/lc_setup.py b/LDMP/lc_setup.py
index 3eb8756ce..4b4bd45ac 100644
--- a/LDMP/lc_setup.py
+++ b/LDMP/lc_setup.py
@@ -1193,7 +1193,7 @@ def __init__(self, parent=None):
         )
 
         self.btn_transmatrix_reset.clicked.connect(
-            lambda: self.set_trans_matrix(get_default=False)
+            lambda: self.set_trans_matrix(get_default=True)
         )
         self.btn_transmatrix_loadfile.clicked.connect(self.trans_matrix_loadfile)
         self.btn_transmatrix_savefile.clicked.connect(self.trans_matrix_savefile)