diff --git a/SLS_C/src/builtin.c b/SLS_C/src/builtin.c
index 24f1b1c..0f24b9c 100644
--- a/SLS_C/src/builtin.c
+++ b/SLS_C/src/builtin.c
@@ -1506,8 +1506,20 @@ Boolean builtin_dup(InterpreterState *interpreter_state) {
 }
 
 Boolean builtin_eval(InterpreterState *interpreter_state) {
-    (void)interpreter_state;
-    return FALSE;
+    if (interpreter_state->stack == NULL) return FALSE;
+    StackItem *code_target = interpreter_state->stack;
+
+    interpreter_state->stack = code_target->next;
+    code_target->next = NULL;
+
+    Boolean return_value = FALSE;
+    if (code_target->type == STACK_TOKEN_STRING || code_target->type == STACK_CODE_BLOCK)
+        return_value = execute_token_string(interpreter_state, code_target->token_string);
+    else if (code_target->type == STACK_IDENTIFIER)
+        return_value = execute_func(interpreter_state, code_target->identifier.name);
+
+    clean_stack(code_target);
+    return return_value;
 }
 
 Boolean builtin_floor(InterpreterState *interpreter_state) {