diff --git a/src/TOP/AGE/trcsms_age.F90 b/src/TOP/AGE/trcsms_age.F90
index f3352a5c41c2cac32bddf15065c31e071cdb196b..cbf3b61a41428132fb2a994fbe66db6ba2defc23 100644
--- a/src/TOP/AGE/trcsms_age.F90
+++ b/src/TOP/AGE/trcsms_age.F90
@@ -74,7 +74,7 @@ CONTAINS
          tr(:,:,jk,jp_age,Krhs) = tmask(:,:,jk) * rryear
       END DO
       !
-      IF( l_trdtrc  )   CALL trd_trc( tr(:,:,:,jp_age,Krhs), jn, jptra_sms, kt, Kmm )   ! save trends
+      IF( l_trdtrc  )   CALL trd_trc( tr(:,:,:,jp_age,Krhs), jp_age, jptra_sms, kt, Kmm )   ! save trends
       !
       IF( ln_timing )   CALL timing_stop('trc_sms_age')
       !