diff --git a/firmware/config/boards/microrusefi/board_configuration.cpp b/firmware/config/boards/microrusefi/board_configuration.cpp
index 328e06f2f1..838b6dc56e 100644
--- a/firmware/config/boards/microrusefi/board_configuration.cpp
+++ b/firmware/config/boards/microrusefi/board_configuration.cpp
@@ -86,6 +86,7 @@ static void setupVbatt() {
 	// set vbatt_divider 8.23
 	// R139=39k high side/R141=10k low side multiplied by above analogInputDividerCoefficient = 8.232f
 	engineConfiguration->vbattDividerCoeff = (49.0f / 10.0f) * engineConfiguration->analogInputDividerCoefficient;
+	// PC1, pin #1 input +12 from Main Relay. Main Relay controlled by TLE8888
 	engineConfiguration->vbattAdcChannel = EFI_ADC_11;
 
 	engineConfiguration->adcVcc = 3.29f;
diff --git a/firmware/controllers/engine_controller.cpp b/firmware/controllers/engine_controller.cpp
index bf45da611e..b236f6e8c2 100644
--- a/firmware/controllers/engine_controller.cpp
+++ b/firmware/controllers/engine_controller.cpp
@@ -696,7 +696,7 @@ void initEngineContoller(Logging *sharedLogger DECLARE_ENGINE_PARAMETER_SUFFIX)
  * UNUSED_SIZE contants.
  */
 #ifndef RAM_UNUSED_SIZE
-#define RAM_UNUSED_SIZE 12200
+#define RAM_UNUSED_SIZE 11700
 #endif
 #ifndef CCM_UNUSED_SIZE
 #define CCM_UNUSED_SIZE 2900
@@ -717,6 +717,6 @@ int getRusEfiVersion(void) {
 	if (initBootloader() != 0)
 		return 123;
 #endif /* EFI_BOOTLOADER_INCLUDE_CODE */
-	return 20200511;
+	return 20200513;
 }
 #endif /* EFI_UNIT_TEST */