diff --git a/Preprocessing/aquatrackaPP.m b/Preprocessing/aquatrackaPP.m
index d7c314a5f..dc99ab366 100644
--- a/Preprocessing/aquatrackaPP.m
+++ b/Preprocessing/aquatrackaPP.m
@@ -62,7 +62,7 @@
     offset(i)       = str2double(readProperty(['offset' analogAquatracka{i}], ParamFile));
 end
 
-commentsAquatracka = {[ getCPHLcomment('factory','430nm','685nm') ' Data converted from analogic input with scaleFactor=' num2str(scaleFactor(1)) ', offset=' num2str(offset(1))) ' .'], ...
+commentsAquatracka = {[ getCPHLcomment('factory','430nm','685nm') ' Data converted from analogic input with scaleFactor=' num2str(scaleFactor(1)) ', offset=' num2str(offset(1)) ' .'], ...
           ['Turbidity data in FTU '...
           'computed from bio-optical sensor raw counts measurements using factory calibration coefficient. The '...
           'fluorometre is used as a nephelometre equipped with a 440nm peak wavelength LED to irradiate. '], ...
diff --git a/test/testOnlyCPHL.m b/test/testOnlyCPHL.m
index 6bf88baa3..e26ebbe9c 100644
--- a/test/testOnlyCPHL.m
+++ b/test/testOnlyCPHL.m
@@ -111,6 +111,26 @@ function test_wqmdat(testCase, wqmdat_reader, wqmdat_v000_param, mode)
             assert(check_cphl(data));
         end
 
+        function test_aquatrackapp(~,sbe19p_reader,sbe19p_v000_param,mode)
+            data = sbe19p_reader({sbe19p_v000_param},mode);
+            %fake volt_cphl variable
+            for k=1:length(data.variables)
+                if contains(data.variables{k}.name,'CPHL')
+                    newvar = data.variables{k};
+                    newvar.name = 'volt_CHL';
+                    data.variables{end+1} = newvar;
+                    break
+                end
+            end
+            output = aquatrackaPP({data},'qc',0);
+            data = output{1};
+            comment = data.variables{end}.comment;
+            assert(check_cphl(data));
+            assert(contains(comment,'analogic input'));
+            assert(contains(comment,'scaleFactor='));
+            assert(contains(comment,'offset='));
+        end
+
     end
 
 end