diff --git a/firmware/controllers/core/fsio_impl.cpp b/firmware/controllers/core/fsio_impl.cpp
index a68c8d271c..7305bb9cb3 100644
--- a/firmware/controllers/core/fsio_impl.cpp
+++ b/firmware/controllers/core/fsio_impl.cpp
@@ -21,6 +21,10 @@
  */
 #define NO_PWM 0
 
+
+// see useFSIO16ForTimingAdjustment
+#define MAGIC_OFFSET_FOR_TIMING_FSIO 15
+
 fsio8_Map3D_f32t fsioTable1("fsio#1");
 fsio8_Map3D_u8t fsioTable2("fsio#2");
 fsio8_Map3D_u8t fsioTable3("fsio#3");
@@ -401,7 +405,13 @@ void runFsio(void) {
 		setPinState("fan", &enginePins.fanRelay, radiatorFanLogic);
 	}
 	if (engineConfiguration->useFSIO16ForTimingAdjustment) {
+		LEElement * element = fsioLogics[MAGIC_OFFSET_FOR_TIMING_FSIO];
 
+		if (element == NULL) {
+			warning(CUSTOM_FSIO_INVALID_EXPRESSION, "invalid expression for %s", "timing");
+		} else {
+			engine->fsioTimingAdjustment = calc.getValue2(engine->fsioTimingAdjustment, element PASS_ENGINE_PARAMETER_SUFFIX);
+		}
 	}
 
 }