diff --git a/src/vm/tests.cc b/src/vm/tests.cc
index 98f809e..47b29fe 100644
--- a/src/vm/tests.cc
+++ b/src/vm/tests.cc
@@ -84,9 +84,7 @@ TEST(VM, BasicCode)
 
     VM vm;
     vm.load_bytecode(std::move(ba));
-    printf("%s\n", vm.debug_stack().c_str());
     vm.call(0);
-    printf("%s\n", vm.debug_stack().c_str());
 
     int32_t result = vm.to_integer(-1);
     ASSERT_EQ(result, 5);