diff --git a/firmware/controllers/algo/engine_configuration.cpp b/firmware/controllers/algo/engine_configuration.cpp
index 8abae976e0..193c0cf429 100644
--- a/firmware/controllers/algo/engine_configuration.cpp
+++ b/firmware/controllers/algo/engine_configuration.cpp
@@ -143,6 +143,18 @@ static void initTemperatureCurve(int size, float *bins, float *values) {
 	}
 }
 
+void prepareVoidConfiguration(engine_configuration_s *activeConfiguration) {
+	memset(activeConfiguration, 0xFF, sizeof(engine_configuration_s));
+	board_configuration_s *boardConfiguration = &activeConfiguration->bc;
+
+	/**
+	 * -1 everywhere is probably good, but explicit values are probably better. Too bad GPIO_UNASSIGNED is not zero :(
+	 */
+	boardConfiguration->triggerInputPins[0] = GPIO_UNASSIGNED;
+	boardConfiguration->triggerInputPins[1] = GPIO_UNASSIGNED;
+	boardConfiguration->triggerInputPins[2] = GPIO_UNASSIGNED;
+}
+
 /**
  * @brief	Global default engine configuration
  * This method sets the default global engine configuration. These values are later overridden by engine-specific defaults
diff --git a/firmware/controllers/algo/engine_configuration.h b/firmware/controllers/algo/engine_configuration.h
index 11cbd197a6..2987429875 100644
--- a/firmware/controllers/algo/engine_configuration.h
+++ b/firmware/controllers/algo/engine_configuration.h
@@ -45,6 +45,7 @@ typedef struct {
 	crc_t value;
 } persistent_config_container_s;
 
+void prepareVoidConfiguration(engine_configuration_s *activeConfiguration);
 void setDefaultConfiguration(DECLARE_ENGINE_PARAMETER_F);
 void setMap(fuel_table_t table, float value);
 void setWholeFuelMap(float value DECLARE_ENGINE_PARAMETER_S);
diff --git a/firmware/rusefi.cpp b/firmware/rusefi.cpp
index 3464eb797c..86075af3d3 100644
--- a/firmware/rusefi.cpp
+++ b/firmware/rusefi.cpp
@@ -189,6 +189,8 @@ void runRusEfi(void) {
 
 	swo_init();
 
+	prepareVoidConfiguration(&activeConfiguration);
+
 	/**
 	 * First data structure keeps track of which hardware I/O pins are used by whom
 	 */
@@ -288,5 +290,5 @@ int getRusEfiVersion(void) {
 		return 123; // this is here to make the compiler happy about the unused array
 	if (UNUSED_CCM_SIZE[0] * 0 != 0)
 		return 3211; // this is here to make the compiler happy about the unused array
-	return 20150407;
+	return 20150408;
 }