diff --git a/functions/miscellaneous/gaplotshape.m b/functions/miscellaneous/gaplotshape.m
index 8b31a4ef352f274ce1067eb971d2e9f531579e80..a008b082ceab684d57218f6ffd2ab399162f044a 100644
--- a/functions/miscellaneous/gaplotshape.m
+++ b/functions/miscellaneous/gaplotshape.m
@@ -98,7 +98,7 @@ switch flag
         plotCentEnd = plot([Lnos+Lcent Lnos+Lcent], [-r r], 'k');
         set(plotCentEnd,'Tag','gaplotCentEnd');
         %%% BOAT-TAIL
-        Daft = settings.optimization.optimBoatD*1000;
+        Daft = rocket.rear.boatFinalDiameter;%settings.optimization.optimBoatD*1000;
         if settings.optimization.boatOptimization
             if settings.optimization.modHaack
                 Laft = state.Population(1, 8);