diff --git a/coloquinte/src/CMakeLists.txt b/coloquinte/src/CMakeLists.txt
index 11449af8..ac0e00e8 100644
--- a/coloquinte/src/CMakeLists.txt
+++ b/coloquinte/src/CMakeLists.txt
@@ -24,7 +24,7 @@ set ( cpps           circuit.cxx
                      orientation.cxx
                      detailed.cxx
                      cell_swapping.cxx
-                     MCF_opt.cxx
+                    #MCF_opt.cxx
                      row_opt.cxx
                      topologies.cxx
                      lookup_table.cxx