diff --git a/firmware/controllers/algo/rusefi_enums.h b/firmware/controllers/algo/rusefi_enums.h
index 6068a6b751..f5dcff2702 100644
--- a/firmware/controllers/algo/rusefi_enums.h
+++ b/firmware/controllers/algo/rusefi_enums.h
@@ -618,9 +618,7 @@ typedef enum {
 /**
  * Hardware pin. This enum is platform-specific.
  */
-typedef enum
-//__attribute__ ((__packed__))
-{
+typedef enum __attribute__ ((__packed__)) {
 	GPIO_UNASSIGNED = 0,
 	GPIO_INVALID = 1,
 
diff --git a/unit_tests/tests/test_engine_math.cpp b/unit_tests/tests/test_engine_math.cpp
index 769a3cae41..0864e84884 100644
--- a/unit_tests/tests/test_engine_math.cpp
+++ b/unit_tests/tests/test_engine_math.cpp
@@ -18,8 +18,9 @@ TEST(misc, structSize) {
 	ASSERT_EQ(1, sizeof(adc_channel_e)) << "small enum size";
 	ASSERT_EQ(1, sizeof(pin_input_mode_e)) << "small enum size";
 	ASSERT_EQ(1, sizeof(pin_output_mode_e)) << "small enum size";
-//	ASSERT_EQ(1, sizeof(brain_pin_e)) << "small enum size";
-//	ASSERT_EQ(16, sizeof(air_pressure_sensor_config_s));
+	ASSERT_EQ(1, sizeof(brain_pin_e)) << "small enum size";
+	ASSERT_EQ(16, sizeof(air_pressure_sensor_config_s));
+	ASSERT_EQ(20000, sizeof(persistent_config_s));
 }
 
 TEST(misc, testIgnitionPlanning) {