Lines of dendrogram overlap in the column portion

[MauriAndresMU1313]

I´m trying to customize my heatmap, all looks fine except for one particular detail: the column dendrogram overlaps due to the big amount of columns.
Here an example:

I tried to change the width of my plot, however, I had no success.
Is there a way to separate more the space between lines in the dendrogram?

[MauriAndresMU1313]

@raivokolde