diff --git a/fig_collect.m b/fig_collect.m
index 3ad2f43..c95f42e 100644
--- a/fig_collect.m
+++ b/fig_collect.m
@@ -822,15 +822,16 @@ function timer_Callback(~,~,handles)
                 {'Second'},{handles.settings.labelX},{handles.settings.labelY},{'Button'}; ...
                 {'%%%%%%'},{'%%%%%%'},{'%%%%%%'},{'%%%%%%'}; ...
                 num2cell(mean_ratings)];
-        % Create export file
-        try
-            writecell(output,fullfile(pathname,filename), ...
-                'FileType','text','Delimiter','comma', ...
-                'QuoteStrings',true,'Encoding','UTF-8');
-            msgbox('Export successful.','Success');
-        catch err
-            errordlg(err.message,'Error saving');
-        end
+            output(cellfun(@(x) any(ismissing(x)), output)) = {''};
+            % Create export file
+            try
+                writecell(output,fullfile(pathname,filename), ...
+                    'FileType','text','Delimiter','comma', ...
+                    'QuoteStrings',true,'Encoding','UTF-8');
+                msgbox('Export successful.','Success');
+            catch err
+                errordlg(err.message,'Error saving');
+            end
         end
         program_reset(handles);
     % While transitioning or paused
diff --git a/fig_review.m b/fig_review.m
index 83d47d0..d723d97 100644
--- a/fig_review.m
+++ b/fig_review.m
@@ -322,6 +322,7 @@ function menu_export_Callback(hObject,~)
         {'Second'},{handles.labelX},{handles.labelY},{'B'}; ...
         {'%%%%%%'},{'%%%%%%'},{'%%%%%%'},{'%%%%%%'}; ...
         num2cell([handles.Seconds,handles.MeanRatingsX,handles.MeanRatingsY,zeros(length(handles.Seconds),1)])];
+    output(cellfun(@(x) any(ismissing(x)), output)) = {''};
     %Prompt user for output filepath
     [filename,pathname] = uiputfile({'*.csv','Comma-Separated Values (*.csv)'},'Save as',fullfile(handles.settings.defaultdir,defaultname));
     if isequal(filename,0), return; end
@@ -382,6 +383,7 @@ function menu_combine_Callback(hObject,~)
         out = [out; append];
         waitbar(f/length(filenames),w);
     end
+    out(cellfun(@(x) any(ismissing(x)), out)) = {''};
     %Prompt user for output filepath
     [outfile,outpath] = uiputfile({'*.csv','Comma-Separated Values (*.csv)'},'Save as',fullfile(handles.settings.defaultdir,'Combined.csv'));
     if isequal(outfile,0), return; end