diff --git a/src/htab.c b/src/htab.c
index 3d2d041..300b74d 100644
--- a/src/htab.c
+++ b/src/htab.c
@@ -7,12 +7,13 @@
 #include <string.h>
 
 HTab* htab_init() {
-    HTab* htab = calloc(1, sizeof(HTab));
+    HTab* htab = malloc(sizeof(HTab));
 
     return htab;
 }
 
-void htab_destroy(HTab* htab) { free(htab); }
+void htab_destroy(HTab* htab) { // free(htab);
+}
 
 // Get the index of a key.
 size_t geti(char* key) {
diff --git a/src/main.c b/src/main.c
index 4c29420..fe5c600 100644
--- a/src/main.c
+++ b/src/main.c
@@ -4,10 +4,8 @@
 #include "include/ast.h"
 #include "include/dstr.h"
 #include "include/exec.h"
-#include "include/global.h"
-#include "include/htab.h"
+
 #include "include/lexer.h"
-#include "include/stack.h"
 #include "include/util.h"
 
 #include "../build/grammars/grammar.tab.h"
@@ -17,16 +15,11 @@ extern AST* root;
 extern char* inp;
 extern int yyparse();
 
-Stack* scope;
-
 int main(int argc, char** argv) {
 
     if (argc - 1 && strlen(argv[1]) > 0 && (inp = argv[1]) && !yyparse()) {
         log_dbg("Parsed successfully!\n");
         ast_print(exec_start(root));
-        HTab* global = stack_pop(scope);
-        htab_destroy(global);
-        stack_destroy(scope);
         ast_destroy(root);
         exit(0);
     }
@@ -63,9 +56,6 @@ int main(int argc, char** argv) {
 #endif
 
             ast_print(exec_start(root));
-            HTab* global = stack_pop(scope);
-            htab_destroy(global);
-            stack_destroy(scope);
 
             ast_destroy(root);
         }
diff --git a/src/scope.c b/src/scope.c
index a433bd2..02c1b5f 100644
--- a/src/scope.c
+++ b/src/scope.c
@@ -12,12 +12,14 @@ Scope* scope_init(Scope* inherit) {
 }
 
 void scope_destroy(Scope* scope) {
+    if (!scope) return;
     htab_destroy(scope->here);
     if (scope->inherit != NULL) scope_destroy(scope->inherit);
     free(scope);
 }
 
 void scope_destroy_psv(Scope* scope) {
+    if (!scope) return;
     htab_destroy(scope->here);
     scope->inherit = NULL;
     free(scope);