diff --git a/pylot/core/util/pdf.py b/pylot/core/util/pdf.py
index f199e52f..2882dec4 100644
--- a/pylot/core/util/pdf.py
+++ b/pylot/core/util/pdf.py
@@ -311,6 +311,12 @@ class ProbabilityDensityFunction(object):
         plt.title(title_str)
         plt.show()
 
+    def limits(self):
+        l1 = self.x0
+        r1 = l1 + self.incr * self.npts
+
+        return l1, r1
+
     def commonlimits(self, incr, other, max_npts=1e5):
         '''
         Takes an increment incr and two left and two right limits and returns
@@ -330,10 +336,8 @@ class ProbabilityDensityFunction(object):
         # >>> manu.commonlimits(0.01, auto)
         # (
 
-        l1 = self.x0
-        r1 = l1 + self.incr * self.npts
-        l2 = other.x0
-        r2 = l2 + other.incr * other.npts
+        l1, r1 = self.limits()
+        l2, r2 = other.limits()
 
         if l1 < l2:
             x0 = l1
diff --git a/pylot/core/util/widgets.py b/pylot/core/util/widgets.py
index a9ddecfa..2b0dcaee 100644
--- a/pylot/core/util/widgets.py
+++ b/pylot/core/util/widgets.py
@@ -243,7 +243,8 @@ class ComparisonDialog(QDialog):
                                          pdf_m.standard_deviation(), \
                                          pdf_m.expectation()
 
-        _ax1.plot(xauto, yauto)
+        _ax1.plot(xmanu, ymanu)
+        _ax1.set_xlim(pdf_m.limits())
         mannotation = "probability density for manual pick\n" \
                       "expectation: {exp}\n" \
                       "std: {std}".format(std=stdmanu, exp=expmanu)
@@ -252,8 +253,9 @@ class ComparisonDialog(QDialog):
         bbox_props = dict(boxstyle='round', facecolor='lightgrey', alpha=.7)
         _anno.set_bbox(bbox_props)
 
-
-        _ax2.plot(xmanu, ymanu)
+        _ax2.plot(xauto, yauto)
+        _ax2.set_xlim(pdf_a.limits())
+        _ax2.set_ylabel('time [s]')
         aannotation = "probability density for automatic pick\n" \
                       "expectation: {exp}\n" \
                       "std: {std}".format(std=stdauto, exp=expauto)