diff --git a/firmware/build.sh b/firmware/build.sh
index 1b3e0f6..df931be 100755
--- a/firmware/build.sh
+++ b/firmware/build.sh
@@ -45,7 +45,7 @@ sdcc \
 	-I. \
 	-DFW_REVISION_STR="\"$(git describe) $(git log -1 --format=%cd --date=iso)\"" \
 	-DCONFIG_STOCK_FW=1 \
-	-DCONFIG_I2C_A=1 \
+	-DCONFIG_I2C_A=0 \
 	build/stock-ivt.rel main.c \
 	-o build/fw-stock.ihx
 
diff --git a/firmware/main.c b/firmware/main.c
index 28c3a55..49d24c4 100644
--- a/firmware/main.c
+++ b/firmware/main.c
@@ -37,7 +37,7 @@
 #define CONFIG_STOCK_FW 1
 #endif
 #ifndef CONFIG_I2C_A
-#define CONFIG_I2C_A 1
+#define CONFIG_I2C_A 0
 #endif
 
 #define USB_DEBUG 0