diff --git a/setup.cfg b/setup.cfg
index 7cbc1b95..deeb7dc1 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -36,6 +36,8 @@ exclude = tests, test*
 [options.entry_points]
 console_scripts =
     aiida-sssp-workflow = aiida_sssp_workflow.cli:cmd_root
+aiida.calculations =
+    sssp_workflow.birch_murnaghan_fit = aiida_sssp_workflow.calculations.birch_murnaghan_fit:birch_murnaghan_fit
 aiida.workflows =
     sssp_workflow.measure.precision = aiida_sssp_workflow.workflows.measure.precision:PrecisionMeasureWorkChain
     sssp_workflow.measure.bands = aiida_sssp_workflow.workflows.measure.bands:BandsMeasureWorkChain