diff --git a/parser/parser.cpp b/parser/parser.cpp
index ab2b8726..3b504ee9 100644
--- a/parser/parser.cpp
+++ b/parser/parser.cpp
@@ -95,6 +95,7 @@ struct ParserState
 {
     std::vector<Predicate *> predicate_stack;
     Predicate *current() { return predicate_stack.back(); }
+    bool negate_next;
 
     void addExpression(Expression exp)
     {
@@ -106,6 +107,10 @@ struct ParserState
             Predicate p;
             p.type = Predicate::Type::Comparison;
             p.sub_expressions.emplace_back(std::move(exp));
+            if (negate_next) {
+                p.negate = true;
+                negate_next = false;
+            }
             current()->sub_predicates.emplace_back(std::move(p));
             predicate_stack.push_back(&current()->sub_predicates.back());
         }
@@ -244,6 +249,11 @@ template<> struct action< one< '(' > >
 
         Predicate group;
         group.type = Predicate::Type::And;
+        if (state.negate_next) {
+            group.negate = true;
+            state.negate_next = false;
+        }
+
         state.current()->sub_predicates.emplace_back(std::move(group));
         state.predicate_stack.push_back(&state.current()->sub_predicates.back());
     }
@@ -264,6 +274,8 @@ template<> struct action< not_pre >
     static void apply( const input & in, ParserState & state )
     {
         std::cout << "<not>" << std::endl;
+
+        state.negate_next = true;
     }
 };
 
diff --git a/parser/parser.hpp b/parser/parser.hpp
index 416faa2e..149f12ff 100644
--- a/parser/parser.hpp
+++ b/parser/parser.hpp
@@ -69,6 +69,8 @@ namespace realm {
 
             // for compounds
             std::vector<Predicate> sub_predicates;
+
+            bool negate;
         };
 
         Predicate parse(const std::string &query);