diff --git a/cmake/features/ECTRANS.cmake b/cmake/features/ECTRANS.cmake
index 0d3a5355c..3d8ab3f08 100644
--- a/cmake/features/ECTRANS.cmake
+++ b/cmake/features/ECTRANS.cmake
@@ -2,13 +2,16 @@ if( atlas_HAVE_ATLAS_TRANS )
 
 ### trans ...
 
+if( NOT DEFINED ATLAS_ENABLE_ECTRANS AND DEFINED ATLAS_ENABLE_TRANS )
+  ecbuild_warn("Atlas option ATLAS_ENABLE_TRANS is deprecated in favour of ATLAS_ENABLE_ECTRANS")
+  set( ATLAS_ENABLE_ECTRANS ${ATLAS_ENABLE_TRANS} )
+endif()
 if( NOT DEFINED ENABLE_ECTRANS AND DEFINED ENABLE_TRANS )
   ecbuild_warn("Atlas option ENABLE_TRANS is deprecated in favour of ENABLE_ECTRANS")
   set( ENABLE_ECTRANS ${ENABLE_TRANS} )
 endif()
-if( NOT DEFINED ATLAS_ENABLE_ECTRANS AND DEFINED ATLAS_ENABLE_TRANS )
-  ecbuild_warn("Atlas option ATLAS_ENABLE_TRANS is deprecated in favour of ATLAS_ENABLE_ECTRANS")
-  set( ATLAS_ENABLE_TRANS ${ENABLE_TRANS} )
+if( DEFINED ATLAS_ENABLE_ECTRANS )
+  set( ENABLE_ECTRANS ${ATLAS_ENABLE_ECTRANS} )
 endif()
 
 set( atlas_HAVE_PACKAGE_ECTRANS 0 )
@@ -32,4 +35,4 @@ ecbuild_add_option( FEATURE ECTRANS
                     DESCRIPTION "Support for IFS spectral transforms"
                     CONDITION atlas_HAVE_ATLAS_FUNCTIONSPACE AND transi_FOUND )
 
-endif()
\ No newline at end of file
+endif()