diff --git a/src/pages/1-samples_selection.py b/src/pages/1-samples_selection.py
index b38cec1e3698bc705c76cd4ec84e7e51edea9dd2..58bd99ad74574c83f5e2dd55a7c5fdf653956deb 100644
--- a/src/pages/1-samples_selection.py
+++ b/src/pages/1-samples_selection.py
@@ -588,7 +588,7 @@ if selected:
                     zip(set(md_df_st_.loc[selected][selected_col]), colorslist[:len(set(md_df_st_.loc[selected][selected_col]))]))
                 st.write('The distribution of selected samples across categories')
                 
-                barhsel = barhplot(md_df_st_.loc[selected][[specs_col]], cmap=cmap2)
+                barhsel = barhplot(md_df_st_.loc[selected][[selected_col]], cmap=cmap2)
                 st.pyplot(barhsel)