diff --git a/tabs/search/frame.lua b/tabs/search/frame.lua
index 69c6af3..4491f45 100644
--- a/tabs/search/frame.lua
+++ b/tabs/search/frame.lua
@@ -226,6 +226,10 @@ function create_frames()
 	do
 	    local editbox = gui.editbox(controls)
 	    editbox:EnableMouse(1)
+	    editbox.formatter = function(str)
+		    local queries = aux.filter_util.queries(str)
+		    return queries and join(map(copy(queries), function(query) return query.prettified end), ';') or color.red(str)
+		end
 	    editbox.complete = completion.complete_filter
 	    editbox:SetPoint('RIGHT', start_button, 'LEFT', -4, 0)
 	    editbox:SetHeight(25)
@@ -303,12 +307,14 @@ function create_frames()
 	    btn:SetPoint('TOPLEFT', status_bar_frame, 'TOPRIGHT', 5, 0)
 	    btn:SetText('Favorite')
 	    btn:SetScript('OnClick', function()
-	        local filters = filter_util.queries(search_box:GetText())
-	        if filters then
+	        local queries, error = filter_util.queries(search_box:GetText())
+	        if queries then
 	            tinsert(_G.aux_favorite_searches, 1, T(
 	                'filter_string', search_box:GetText(),
-	                'prettified', join(map(filters, function(filter) return filter.prettified end), ';')
+	                'prettified', join(map(queries, function(query) return query.prettified end), ';')
 	            ))
+	        else
+		        print('Invalid filter:', error)
 	        end
 	        update_search_listings()
 	    end)
diff --git a/tabs/search/results.lua b/tabs/search/results.lua
index 88f2794..2e89bdd 100644
--- a/tabs/search/results.lua
+++ b/tabs/search/results.lua
@@ -118,7 +118,7 @@ end
 
 function update_auto_buy_filter()
 	if _G.aux_auto_buy_filter ~= '' then
-		local queries = aux.filter_util.queries(_G.aux_auto_buy_filter)
+		local queries, error = aux.filter_util.queries(_G.aux_auto_buy_filter)
 		if queries then
 			if getn(queries) > 1 then
 				print 'Error: The automatic buyout filter does not support multi-queries'
@@ -130,6 +130,8 @@ function update_auto_buy_filter()
 				auto_buy_filter_button:SetChecked(true)
 				return
 			end
+		else
+			print('Invalid auto buy filter:', error)
 		end
 	end
 	_G.aux_auto_buy_filter = ''
@@ -310,8 +312,9 @@ function public.execute(resume, real_time)
 	end
 	local filter_string = search_box:GetText()
 
-	local queries = aux.filter_util.queries(filter_string)
+	local queries, error = aux.filter_util.queries(filter_string)
 	if not queries then
+		print('Invalid filter:', error)
 		return
 	elseif real_time then
 		if getn(queries) > 1 then
diff --git a/tabs/search/saved.lua b/tabs/search/saved.lua
index 923256f..37fa2d7 100644
--- a/tabs/search/saved.lua
+++ b/tabs/search/saved.lua
@@ -19,7 +19,7 @@ function update_search_listings()
 	for i, recent_search in _G.aux_recent_searches do
 		local name = strsub(recent_search.prettified, 1, 250)
 		tinsert(recent_search_rows, {
-			cols = {{value=name}},
+			cols = {{ value=name }},
 			search = recent_search,
 			index = i,
 		})
diff --git a/util/filter.lua b/util/filter.lua
index 2bfff0e..5af1619 100644
--- a/util/filter.lua
+++ b/util/filter.lua
@@ -362,8 +362,7 @@ function public.queries(filter_string)
         str = trim(str)
         local query, _, error = query(str)
         if not query then
-            print('Invalid filter:', error)
-            return
+	        return nil, error
         else
             tinsert(queries, query)
         end