diff --git a/firmware/src/edubrm.c b/firmware/src/edubrm.c
index 82b0101..f193a82 100644
--- a/firmware/src/edubrm.c
+++ b/firmware/src/edubrm.c
@@ -128,7 +128,7 @@ void EnablePWM1(uint32_t period, uint32_t duty) {
 	LPC_SYSCON->SYSAHBCLKCTRL |= 1<<9; // Enables clock for 32-bit counter/timer 0.
 
 	LPC_IOCON->PIO1_6 &= ~0x07;
-	LPC_IOCON->PIO1_6 |= 0x01; // Selects function CT32B0_MAT0
+	LPC_IOCON->PIO1_6 |= 0x02; // Selects function CT32B0_MAT0
 
 	LPC_TMR32B0->MR3 = period;
 	LPC_TMR32B0->MR0 = duty;
diff --git a/firmware/src/edubrm.h b/firmware/src/edubrm.h
index b0239e0..577264e 100644
--- a/firmware/src/edubrm.h
+++ b/firmware/src/edubrm.h
@@ -1,4 +1,4 @@
 void GetInReport (uint8_t src[], uint32_t length);
 void SetOutReport (uint8_t dst[], uint32_t length);
-void EnablePWM1(uint16_t period, uint16_t duty);
+void EnablePWM1(uint32_t period, uint32_t duty);
 void EnablePWM2(uint16_t period, uint16_t duty);