diff --git a/local/plot_pca_similarities.py b/local/plot_pca_similarities.py
index d087f29c9c427127806e97d292a830a0746435f1..55e6153301fcf8d3c9bd456096901d219dc8c9d6 100644
--- a/local/plot_pca_similarities.py
+++ b/local/plot_pca_similarities.py
@@ -13,13 +13,14 @@ import faiss
 from mpl_toolkits.mplot3d import Axes3D
 import matplotlib.patches as patches
 
-# List of predefined colors for each corpus (you can add more if you like)
+# List of predefined colors for each corpus (you can add more if necessary)
 colors = ['tab:red', 'tab:blue', 
           'tab:green', 'tab:orange', 
           'tab:purple', 'tab:brown', 
           'tab:pink', 'tab:gray', 
           'tab:olive', 'tab:cyan']
-# markersize
+
+# fontsize and markersize
 MS = 30
 
 def main(X_path, y_path, pcaA_path, pcab_path, out_path, json_path):
@@ -40,10 +41,17 @@ def main(X_path, y_path, pcaA_path, pcab_path, out_path, json_path):
     labels = list(spks)
     fig, ax = plt.subplots(figsize=(15,15))
     cax = ax.matshow(X, interpolation='nearest')
+    # x-ticks fontsize
+    for label in ax.get_xticklabels():
+        label.set_fontsize(25)
+    # y-ticks fontsize
+    for label in ax.get_yticklabels():
+        label.set_fontsize(25)
     ax.grid()
     plt.xticks(range(len(labels)), labels, rotation=90);
     plt.yticks(range(len(labels)), labels);
-    fig.colorbar(cax, ticks=[0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, .8, .9, 1])
+    cbar = fig.colorbar(cax, ticks=[0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, .8, .9, 1])
+    cbar.ax.tick_params(labelsize=25)
     fig_path = os.path.join(out_path,'{}.png'.format(X_path.split('/')[-1].replace('.npy','')))
     print('\nsave similarity matrix to {}'.format(fig_path))
     plt.savefig(fig_path)