diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 49f6208..3973737 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -349,10 +349,11 @@
     slave/containerizer/mesos/isolators/xfs/utils.cpp)
 endif ()
 
-if (ENABLE_CGROUPS_v2)
+if (ENABLE_CGROUPS_V2)
   list(APPEND LINUX_SRC
     linux/cgroups2.cpp
     linux/ebpf.cpp
+    slave/containerizer/mesos/isolators/cgroups2/cgroups2.cpp
     slave/containerizer/mesos/isolators/cgroups2/controller.cpp
     slave/containerizer/mesos/isolators/cgroups2/controllers/core.cpp
     slave/containerizer/mesos/isolators/cgroups2/controllers/cpu.cpp