diff --git a/@amimodel/augmento2.m b/@amimodel/augmento2.m
index a11a1033aa..ac721f8c99 100644
--- a/@amimodel/augmento2.m
+++ b/@amimodel/augmento2.m
@@ -94,8 +94,8 @@
     augmodel.sym.Jz = [this.sym.Jz,SJz];
     augmodel.sym.p = this.sym.p;
     augmodel.sym.k = this.sym.k;
-    augmodel.sym.sigma_y = [this.sym.sigma_y(:)', reshape(transpose(this.fun.dsigma_ydp.sym), [1,numel(this.fun.dsigma_ydp.sym)])];
-    augmodel.sym.sigma_z = [this.sym.sigma_z(:)', reshape(transpose(this.fun.dsigma_zdp.sym), [1,numel(this.fun.dsigma_zdp.sym)])];
+    augmodel.sym.sigma_y = [transpose(this.sym.sigma_y(:)), reshape(transpose(this.fun.dsigma_ydp.sym), [1,numel(this.fun.dsigma_ydp.sym)])];
+    augmodel.sym.sigma_z = [transpose(this.sym.sigma_z(:)), reshape(transpose(this.fun.dsigma_zdp.sym), [1,numel(this.fun.dsigma_zdp.sym)])];
     
     modelo2 = amimodel(augmodel,[this.modelname '_o2']);
     modelo2.o2flag = 1;