diff --git a/CEP/DP3/CMakeLists.txt b/CEP/DP3/CMakeLists.txt
index 2ef1a8b00ff8dfa6558cf0b7057e32a70aaa5d89..818e6149230803d667ad73782887950846d6199e 100644
--- a/CEP/DP3/CMakeLists.txt
+++ b/CEP/DP3/CMakeLists.txt
@@ -7,9 +7,10 @@ lofar_add_package(DPPP_AOFlag)
 lofar_add_package(SPW_Combine SPWCombine)
 lofar_add_package(AOFlagger)
 
-lofar_find_package(Armadillo)
-if(${ARMADILLO_FOUND})
-  lofar_add_package(DPPP_DDECal)
-else()
-  message(WARNING "Armadillo was not found, NOT building DPPP_DDECal")
-endif()
+# Disable DDECal for LOFAR release 2.21
+#lofar_find_package(Armadillo)
+#if(${ARMADILLO_FOUND})
+#  lofar_add_package(DPPP_DDECal)
+#else()
+#  message(WARNING "Armadillo was not found, NOT building DPPP_DDECal")
+#endif()