diff --git a/client/lib/filter.js b/client/lib/filter.js
index eac23e470..b971e4e0b 100644
--- a/client/lib/filter.js
+++ b/client/lib/filter.js
@@ -157,8 +157,8 @@ class AdvancedFilter {
           case '==':
           case '===':
           {
-            const field = commands[i-1];
-            const str = commands[i+1];
+            const field = commands[i-1].cmd;
+            const str = commands[i+1].cmd;
             commands[i] = {}[field]=str;
             commands.splice(i-1, 1);
             commands.splice(i, 1);