diff --git a/src/arch/8051/arch.mk b/src/arch/8051/arch.mk
index 4e6255a..f31d0cd 100644
--- a/src/arch/8051/arch.mk
+++ b/src/arch/8051/arch.mk
@@ -1,4 +1,4 @@
-CC=sdcc -mmcs51
+CC=sdcc -mmcs51 --Werror
 OBJ=$(patsubst src/%.c,$(BUILD)/%.rel,$(SRC))
 
 # Run EC rom in simulator
diff --git a/src/board/system76/galp3-c/battery.c b/src/board/system76/galp3-c/battery.c
index 7a68cea..9157e01 100644
--- a/src/board/system76/galp3-c/battery.c
+++ b/src/board/system76/galp3-c/battery.c
@@ -69,6 +69,8 @@ uint8_t battery_charger_disable(void) {
     // Disable charge voltage
     err = smbus_write(0x09, 0x15, 0);
     if (err) return err;
+
+    return 0;
 }
 
 uint8_t battery_charger_enable(void) {
diff --git a/src/board/system76/galp3-c/gpio.c b/src/board/system76/galp3-c/gpio.c
index ae58602..4b4753b 100644
--- a/src/board/system76/galp3-c/gpio.c
+++ b/src/board/system76/galp3-c/gpio.c
@@ -12,7 +12,7 @@ void gpio_init() {
     GPDRC = 0;
     GPDRD = (1 << 5) | (1 << 4) | (1 << 3);
     GPDRE = 0;
-    GPDRF = (1 << 7) | (1 << 6);
+    GPDRF = 0xC0; // (1 << 7) | (1 << 6)
     GPDRG = 0;
     GPDRH = 0;
     GPDRI = 0;
diff --git a/src/board/system76/galp3-c/keymap.c b/src/board/system76/galp3-c/keymap.c
index 418f3f8..c512857 100644
--- a/src/board/system76/galp3-c/keymap.c
+++ b/src/board/system76/galp3-c/keymap.c
@@ -1,3 +1,5 @@
+#include <stdio.h>
+
 #include <board/keymap.h>
 
 uint16_t __code KEYMAP[KM_OUT][KM_IN][KM_LAY] = {
@@ -276,5 +278,9 @@ uint16_t keymap_translate(uint16_t key) {
         case K_LEFT: return (K_E0 | 0x4B);
         case K_DOWN: return (K_E0 | 0x50);
         case K_RIGHT: return (K_E0 | 0x4D);
+
+        default:
+            printf("keymap_translate: unknown %02X\n", key);
+            return 0;
     }
 }
diff --git a/src/board/system76/galp3-c/main.c b/src/board/system76/galp3-c/main.c
index ddc4077..3382b3c 100644
--- a/src/board/system76/galp3-c/main.c
+++ b/src/board/system76/galp3-c/main.c
@@ -272,9 +272,9 @@ void power_button() {
     last = new;
 }
 
-void touchpad_event(struct Ps2 * ps2) {
-    //TODO
-}
+// void touchpad_event(struct Ps2 * ps2) {
+//     //TODO
+// }
 
 struct Gpio __code LED_SSD_N = GPIO(G, 6);
 struct Gpio __code LED_AIRPLANE_N = GPIO(G, 6);
@@ -317,7 +317,7 @@ void main(void) {
         ac_adapter();
         power_button();
         kbscan_event();
-        touchpad_event(&PS2_3);
+        //TODO: touchpad_event(&PS2_3);
         kbc_event(&KBC);
         pmc_event(&PMC_1);
     }
diff --git a/src/board/system76/galp3-c/stdio.c b/src/board/system76/galp3-c/stdio.c
index d2c8365..5a4adf5 100644
--- a/src/board/system76/galp3-c/stdio.c
+++ b/src/board/system76/galp3-c/stdio.c
@@ -4,7 +4,7 @@
 
 void i2c_write(unsigned char value) {
     // Write value to 0x76
-    TRASLAA = 0x76 << 1;
+    TRASLAA = 0xEC; // 0x76 << 1
     HOCMDA = value;
 
     for (;;) {