diff --git a/glotaran/builtin/megacomplexes/damped_oscillation/damped_oscillation_megacomplex.py b/glotaran/builtin/megacomplexes/damped_oscillation/damped_oscillation_megacomplex.py
index 7953df643..d57996a6f 100644
--- a/glotaran/builtin/megacomplexes/damped_oscillation/damped_oscillation_megacomplex.py
+++ b/glotaran/builtin/megacomplexes/damped_oscillation/damped_oscillation_megacomplex.py
@@ -27,7 +27,7 @@
         "frequencies": List[Parameter],
         "rates": List[Parameter],
     },
-    register_as="damped_oscillation",
+    register_as="damped-oscillation",
 )
 class DampedOscillationMegacomplex(Megacomplex):
     @model_item_validator(False)