diff --git a/checker.c b/checker.c
index 791679b..eb0deb0 100644
--- a/checker.c
+++ b/checker.c
@@ -238,6 +238,7 @@ void checker_check_assign(Checker* checker, SymbolTable* table, ASTNode* node)
 
 void checker_check_let(Checker* checker, SymbolTable* table, ASTNode* node)
 {
+    checker_check_expr(checker, table, node->let_node.value);
     Symbol* found
         = symbol_table_resolve_local(table, node->let_node.id->id_value);
     if (found != NULL) {
@@ -245,7 +246,6 @@ void checker_check_let(Checker* checker, SymbolTable* table, ASTNode* node)
         print_error("checker: redefinition", node->pos);
         return;
     }
-    checker_check_expr(checker, table, node->let_node.value);
 }
 
 void checker_check_fn(Checker* checker, SymbolTable* table, ASTNode* node) { }