diff --git a/src/gb/test/core.c b/src/gb/test/core.c
index 09f9ca25a..a8638012b 100644
--- a/src/gb/test/core.c
+++ b/src/gb/test/core.c
@@ -29,6 +29,7 @@ M_TEST_DEFINE(reset) {
 	struct mCore* core = GBCoreCreate();
 	assert_non_null(core);
 	assert_true(core->init(core));
+	mCoreInitConfig(core, NULL);
 	core->reset(core);
 	core->deinit(core);
 }
@@ -37,6 +38,7 @@ M_TEST_DEFINE(loadNullROM) {
 	struct mCore* core = GBCoreCreate();
 	assert_non_null(core);
 	assert_true(core->init(core));
+	mCoreInitConfig(core, NULL);
 	assert_false(core->loadROM(core, NULL));
 	core->reset(core);
 	core->deinit(core);
diff --git a/src/gb/test/mbc.c b/src/gb/test/mbc.c
index a9448892b..5498d004d 100644
--- a/src/gb/test/mbc.c
+++ b/src/gb/test/mbc.c
@@ -16,6 +16,7 @@ M_TEST_SUITE_SETUP(GBMBC) {
 	GBSynthesizeROM(vf);
 	struct mCore* core = GBCoreCreate();
 	core->init(core);
+	mCoreInitConfig(core, NULL);
 	core->loadROM(core, vf);
 	*state = core;
 	return 0;
diff --git a/src/gb/test/memory.c b/src/gb/test/memory.c
index f4e0ee642..01a4b398f 100644
--- a/src/gb/test/memory.c
+++ b/src/gb/test/memory.c
@@ -16,6 +16,7 @@ M_TEST_SUITE_SETUP(GBMemory) {
 	GBSynthesizeROM(vf);
 	struct mCore* core = GBCoreCreate();
 	core->init(core);
+	mCoreInitConfig(core, NULL);
 	core->loadROM(core, vf);
 	*state = core;
 	return 0;
diff --git a/src/gb/test/rtc.c b/src/gb/test/rtc.c
index d26cb696e..71d06ced2 100644
--- a/src/gb/test/rtc.c
+++ b/src/gb/test/rtc.c
@@ -48,6 +48,7 @@ M_TEST_SUITE_SETUP(GBRTC) {
 		return -1;
 	}
 	test->core->init(test->core);
+	mCoreInitConfig(test->core, NULL);
 	struct VFile* vf = VFileMemChunk(NULL, 2048);
 	GBSynthesizeROM(vf);
 	test->core->loadROM(test->core, vf);