diff --git a/pyerrors/correlators.py b/pyerrors/correlators.py
index 4e3a98bb..36762eea 100644
--- a/pyerrors/correlators.py
+++ b/pyerrors/correlators.py
@@ -299,9 +299,9 @@ class Corr:
         if logscale:
             ax1.set_yscale('log')
         else:
-        # we generate ylim instead of using autoscaling.
-            y_min=min([(x[0].value - x[0].dvalue)  for x in self.content[x_range[0]:x_range[1]] if(not x is None)])
-            y_max=max([(x[0].value + x[0].dvalue)  for x in self.content[x_range[0]:x_range[1]] if(not x is None)])
+            # we generate ylim instead of using autoscaling.
+            y_min=min([(x[0].value - x[0].dvalue) for x in self.content[x_range[0]:x_range[1]] if (x is not None) and x[0].dvalue < 2 * np.abs(x[0].value)])
+            y_max=max([(x[0].value + x[0].dvalue) for x in self.content[x_range[0]:x_range[1]] if (x is not None) and x[0].dvalue < 2 * np.abs(x[0].value)])
             ax1.set_ylim([y_min - 0.1 * (y_max - y_min), y_max + 0.1 * (y_max - y_min)])
 
         if comp:
@@ -331,7 +331,7 @@ class Corr:
         handles, labels = ax1.get_legend_handles_labels()
         if labels:
             legend = ax1.legend()
-        plt.show()
+        plt.draw()
 
         if save:
             if isinstance(save, str):