diff --git a/src/operators/gt.cc b/src/operators/gt.cc
index c56a1d2f..e9eda697 100644
--- a/src/operators/gt.cc
+++ b/src/operators/gt.cc
@@ -22,21 +22,16 @@
 namespace ModSecurity {
 namespace operators {
 
-bool Gt::evaluate(Assay *assay) {
-    /**
-     * @todo Implement the operator Gt.
-     *       Reference: https://github.com/SpiderLabs/ModSecurity/wiki/Reference-Manual#gt
-     */
-    return true;
+bool Gt::evaluate(Assay *assay, const std::string &input) {
+    bool gt = atoll(input.c_str()) > atoll(param.c_str());
+
+    if (negation) {
+        return !gt;
+    }
+
+    return gt;
 }
 
 
-Gt::Gt(std::string op, std::string param,
-    bool negation)
-    : Operator() {
-    this->op = op;
-    this->param = param;
-}
-
 }  // namespace operators
 }  // namespace ModSecurity
diff --git a/src/operators/gt.h b/src/operators/gt.h
index 001d3629..3b2a3620 100644
--- a/src/operators/gt.h
+++ b/src/operators/gt.h
@@ -27,8 +27,10 @@ namespace operators {
 class Gt : public Operator {
  public:
     /** @ingroup ModSecurity_Operator */
-    Gt(std::string o, std::string p, bool i);
-    bool evaluate(Assay *assay);
+    Gt(std::string op, std::string param, bool negation)
+        : Operator(op, param, negation) { }
+
+     bool evaluate(Assay *assay, const std::string &input) override;
 };
 
 }  // namespace operators