diff --git a/simulations/CMakeLists.txt b/simulations/CMakeLists.txt
index b953339c6..b9ddcbe49 100755
--- a/simulations/CMakeLists.txt
+++ b/simulations/CMakeLists.txt
@@ -1,4 +1,4 @@
-#add_subdirectory(effective_area)
-add_subdirectory(radioactive_decays)
+add_subdirectory(effective_area)
+#add_subdirectory(radioactive_decays)
 #add_subdirectory(supernova)
 #add_subdirectory(efficiency_calibration)