diff --git a/orangecontrib/spectroscopy/widgets/icons/2dcos.svg b/orangecontrib/spectroscopy/widgets/icons/2dcos.svg
new file mode 100644
index 000000000..b782dcc15
--- /dev/null
+++ b/orangecontrib/spectroscopy/widgets/icons/2dcos.svg
@@ -0,0 +1,1273 @@
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diff --git a/orangecontrib/spectroscopy/widgets/owcos.py b/orangecontrib/spectroscopy/widgets/owcos.py
index d9f07c475..238ede988 100644
--- a/orangecontrib/spectroscopy/widgets/owcos.py
+++ b/orangecontrib/spectroscopy/widgets/owcos.py
@@ -182,8 +182,7 @@ class OWCos(OWWidget):
     description = (
         "Perform 2D correlation analysis with series spectra")
 
-    # TODO - needs icon
-    icon = "icons/average.svg"
+    icon = "icons/2dcos.svg"
 
     graph_name = "plotview"  # need this to show the save button
 
@@ -444,7 +443,7 @@ def plotCOS(self):
                                     (topSPwn.max() - topSPwn.min()),
                                     (leftSPwn.max() - leftSPwn.min())))
 
-            self.cbarCOS.set_range(-1 * np.absolute(cosmat).max(), np.absolute(cosmat).max())
+            self.cbarCOS.set_range(-1 * np.nanmax(np.absolute(cosmat)), np.nanmax(np.absolute(cosmat)))
             self.cbarCOS.set_colors(np.array(colorcet.diverging_bwr_40_95_c42) * 255)
 
             for s in leftSP:
@@ -487,4 +486,3 @@ def commit(self):
     from Orange.widgets.utils.widgetpreview import WidgetPreview
 
     WidgetPreview(OWCos).run(set_data1=Orange.data.Table("collagen"), set_data2=None)
-    # WidgetPreview(OWCos).run(set_data1=Orange.data.Table("/Users/borondics/2dcos-test-lShift2b_large.dat"), set_data2=None)
\ No newline at end of file