diff --git a/src/trans/gpu/external/setup_trans.F90 b/src/trans/gpu/external/setup_trans.F90
index f4f00bec..165cb5f7 100755
--- a/src/trans/gpu/external/setup_trans.F90
+++ b/src/trans/gpu/external/setup_trans.F90
@@ -363,6 +363,10 @@ SUBROUTINE SETUP_TRANS(KSMAX,KDGL,KDLON,KLOEN,LDSPLIT,PSTRET,&
   D%LCPNMONLY=LDPNMONLY
 ENDIF
 
+IF(PRESENT(LDUSEFFTW)) THEN
+  WRITE(NOUT,*) 'SETUP_TRANS: LDUSEFFTW option is not relevant for GPUs'
+ENDIF
+
 ! Setup distribution independent dimensions
 CALL SETUP_DIMS