diff --git a/simple/ice_model.F90 b/simple/ice_model.F90
index 8777adc0..b499ec4e 100644
--- a/simple/ice_model.F90
+++ b/simple/ice_model.F90
@@ -1110,7 +1110,7 @@ subroutine ice_model_init ( Ice, Time_Init, Time, &
 ! this perturbation may be useful in accessing model sensitivities
 
   if ( abs(sst_anom) > 0.0001 ) then
-    Ice%t_surf(:,:) = Ice%t_surf(:,:) + fms_amip_interp_sst_anom
+    Ice%t_surf(:,:) = Ice%t_surf(:,:) + sst_anom
   endif
 
 !----------------------------------------------------------