diff --git a/MotorDriver.cpp b/MotorDriver.cpp
index 8749471..f18050e 100644
--- a/MotorDriver.cpp
+++ b/MotorDriver.cpp
@@ -510,7 +510,7 @@ void  MotorDriver::getFastPin(const FSH* type,int pin, bool input, FASTPIN & res
 #if defined(ARDUINO_GIGA)
     (void)type;
     (void)input; // no warnings please
-    *result = digitalPinToGpio(pin);
+    result = digitalPinToGpio(pin);
 #else
     (void) type; // avoid compiler warning if diag not used above.
 #if defined(ARDUINO_ARCH_SAMD)
diff --git a/MotorDriver.h b/MotorDriver.h
index 43acb30..12e44c5 100644
--- a/MotorDriver.h
+++ b/MotorDriver.h
@@ -31,6 +31,7 @@
 enum TRACK_MODE : byte {TRACK_MODE_NONE = 1, TRACK_MODE_MAIN = 2, TRACK_MODE_PROG = 4,
                         TRACK_MODE_DC = 8, TRACK_MODE_DCX = 16, TRACK_MODE_EXT = 32};
 #ifdef ARDUINO_GIGA
+extern gpio_t digitalPinToGpio(int P);
 #define setHIGH(fastpin)  gpio_write(&fastpin, 1)
 #define setLOW(fastpin) gpio_write(&fastpin, 0)
 #else