diff --git a/pygmtsar/pygmtsar/Stack_sbas.py b/pygmtsar/pygmtsar/Stack_sbas.py
index e52b5fa8..6bba5ac0 100644
--- a/pygmtsar/pygmtsar/Stack_sbas.py
+++ b/pygmtsar/pygmtsar/Stack_sbas.py
@@ -752,7 +752,7 @@ def plot_baseline_deviation(self, baseline_pairs, pairs_best=None, column='stdde
         #print ('NOTE: this function is deprecated, use instead Stack.plot_baseline_attribute()')
         self.plot_baseline_attribute(baseline_pairs, pairs_best, column=column, caption='Baseline Deviation')
 
-    def plot_baseline_displacement(self, phase, corr=None, caption=None, cmap='turbo',
+    def plot_baseline_displacement(self, phase, corr=None, caption='LSQ and STL Displacement Models, [rad]', cmap='turbo',
                                    displacement=True, unwrap=True,
                                    stl=False, stl_freq='W', stl_periods=52, stl_robust=True,
                                    los=False, tolerance=np.pi/2, xlabel_rotation=45,
@@ -900,15 +900,13 @@ def plot_baseline_displacement(self, phase, corr=None, caption=None, cmap='turbo
         plt.xticks(rotation=xlabel_rotation)
         plt.xlabel('Timeline')
         plt.ylabel(f'{name}, [{unit}]')
-        plt.title('Displacement' \
-                  + (f' RMSE={rmse:0.3f} [{unit}]' if displacement or stl else '') \
-                  + (f'\n{caption}' if caption is not None else ''))
+        plt.title(f'{caption}\n' + (f'RMSE={rmse:0.3f} [{unit}]' if displacement or stl else ''))
         plt.xlim([dates[0], dates[-1]])
         if (displacement or stl) and legend:
             plt.legend(framealpha=legend_alpha)
 
-    def plot_baseline_displacement_los_mm(self, phase, corr=None, caption=None, cmap='turbo',
-                                   displacement=True, unwrap=True,
+    def plot_baseline_displacement_los_mm(self, phase, corr=None, caption='LSQ and STL Displacement Models, [mm]',
+                                   cmap='turbo', displacement=True, unwrap=True,
                                    stl=False, stl_freq='W', stl_periods=52, stl_robust=True,
                                    tolerance=np.pi/2, xlabel_rotation=45,
                                    legend=True, legend_alpha=None, linewidth=0.5):