diff --git a/src/lager_util.erl b/src/lager_util.erl
index 090d45f..0a76f1b 100644
--- a/src/lager_util.erl
+++ b/src/lager_util.erl
@@ -408,44 +408,56 @@ validate_trace(_) ->
 
 validate_trace_filter(Filter) when is_tuple(Filter), is_atom(element(1, Filter)) =:= false ->
     false;
-validate_trace_filter(Filter) ->
-        case lists:all(fun({Key, '*'}) when is_atom(Key) -> true;
-                          ({Key, '!'}) when is_atom(Key) -> true;
-                          ({Key, _Value})      when is_atom(Key) -> true;
-                          ({Key, '=', _Value}) when is_atom(Key) -> true;
-                          ({Key, '<', _Value}) when is_atom(Key) -> true;
-                          ({Key, '>', _Value}) when is_atom(Key) -> true;
-                          (_) -> false end, Filter) of
-            true ->
-                true;
-            _ ->
-                false
-        end.
+validate_trace_filter(Filter) when is_list(Filter) ->
+    lists:all(fun validate_trace_filter/1, Filter);
+validate_trace_filter({Key, '*'}) when is_atom(Key) -> true;
+validate_trace_filter({any, L}) when is_list(L) -> lists:all(fun validate_trace_filter/1, L);
+validate_trace_filter({all, L}) when is_list(L) -> lists:all(fun validate_trace_filter/1, L);
+validate_trace_filter({null, Bool}) when is_boolean(Bool) -> true;
+validate_trace_filter({Key, _Value})      when is_atom(Key) -> true;
+validate_trace_filter({Key, '=', _Value}) when is_atom(Key) -> true;
+validate_trace_filter({Key, '!=', _Value}) when is_atom(Key) -> true;
+validate_trace_filter({Key, '<', _Value}) when is_atom(Key) -> true;
+validate_trace_filter({Key, '=<', _Value}) when is_atom(Key) -> true;
+validate_trace_filter({Key, '>', _Value}) when is_atom(Key) -> true;
+validate_trace_filter({Key, '>=', _Value}) when is_atom(Key) -> true;
+validate_trace_filter(_) -> false.
 
 trace_all(Query) ->
-	glc:all(trace_acc(Query)).
+    glc:all(trace_acc(Query)).
 
 trace_any(Query) ->
-	glc:any(Query).
+    glc:any(Query).
 
 trace_acc(Query) ->
     trace_acc(Query, []).
 
 trace_acc([], Acc) ->
-	lists:reverse(Acc);
+    lists:reverse(Acc);
+trace_acc([{any, L}|T], Acc) ->
+    trace_acc(T, [glc:any(L)|Acc]);
+trace_acc([{all, L}|T], Acc) ->
+    trace_acc(T, [glc:all(L)|Acc]);
+trace_acc([{null, Bool}|T], Acc) ->
+    trace_acc(T, [glc:null(Bool)|Acc]);
 trace_acc([{Key, '*'}|T], Acc) ->
-	trace_acc(T, [glc:wc(Key)|Acc]);
+    trace_acc(T, [glc:wc(Key)|Acc]);
 trace_acc([{Key, '!'}|T], Acc) ->
-	trace_acc(T, [glc:nf(Key)|Acc]);
+    trace_acc(T, [glc:nf(Key)|Acc]);
 trace_acc([{Key, Val}|T], Acc) ->
-	trace_acc(T, [glc:eq(Key, Val)|Acc]);
+    trace_acc(T, [glc:eq(Key, Val)|Acc]);
 trace_acc([{Key, '=', Val}|T], Acc) ->
-	trace_acc(T, [glc:eq(Key, Val)|Acc]);
+    trace_acc(T, [glc:eq(Key, Val)|Acc]);
+trace_acc([{Key, '!=', Val}|T], Acc) ->
+    trace_acc(T, [glc:neq(Key, Val)|Acc]);
 trace_acc([{Key, '>', Val}|T], Acc) ->
-	trace_acc(T, [glc:gt(Key, Val)|Acc]);
+    trace_acc(T, [glc:gt(Key, Val)|Acc]);
+trace_acc([{Key, '>=', Val}|T], Acc) ->
+    trace_acc(T, [glc:gte(Key, Val)|Acc]);
+trace_acc([{Key, '=<', Val}|T], Acc) ->
+    trace_acc(T, [glc:lte(Key, Val)|Acc]);
 trace_acc([{Key, '<', Val}|T], Acc) ->
-	trace_acc(T, [glc:lt(Key, Val)|Acc]).
-
+    trace_acc(T, [glc:lt(Key, Val)|Acc]).
 
 check_traces(_, _,  [], Acc) ->
     lists:flatten(Acc);
@@ -464,10 +476,10 @@ check_trace(Attrs, {Filter, _Level, Dest}) when is_tuple(Filter) ->
     glc:handle(?DEFAULT_TRACER, Made),
     Match = glc_lib:matches(Filter, Made),
     case Match of
-	true ->
-	    Dest;
-	false ->
-	    []
+        true ->
+            Dest;
+        false ->
+            []
     end.
 
 -spec is_loggable(lager_msg:lager_msg(), non_neg_integer()|{'mask', non_neg_integer()}, term()) -> boolean().