diff --git a/include/pilang.hpp b/include/pilang.hpp
index c8fe8e4..2706012 100644
--- a/include/pilang.hpp
+++ b/include/pilang.hpp
@@ -85,7 +85,10 @@ namespace Pilang3 {
         void *anybuf = nullptr;
 
         Environment() {
-            variableScope.push({});
+            variableScope.push({
+                                   {"true", std::make_shared<Variable>(Variable{Variable::id_integer, 1})},
+                                   {"false", std::make_shared<Variable>(Variable{Variable::id_integer, 0})}
+                               });
             globalScope = &variableScope.top();
         }