How to set the same size to all points in PCA from fviz_pca_biplot?

Question

everyone. I'm working on a PCA using fviz_pca_biplot (factoextra package), but for some reason the points inside it don't have all the same size. Is there any workaround to solve it?

My code

fviz_pca_biplot(pca_var, col.ind= cafe$Genótipo, 
            label= "var", col.var = "black", legend.title= "Genótipo",
            palette = c("black", "darkgreen", "yellow", "tomato4", 
                        "grey19", "darkviolet", "green3", "lemonchiffon4",
                        "navajowhite", "mediumblue"), 
            pointsize= 3, point= 16, labelsize= 4)