diff --git a/ports/stm32/Makefile b/ports/stm32/Makefile
index 0e7f7f71af9da259f089ca63638df833e6140127..4e185b79486d1a3c293f1a133aa744bc9d812a42 100644
--- a/ports/stm32/Makefile
+++ b/ports/stm32/Makefile
@@ -216,7 +216,7 @@ SRC_C = \
 	pin_named_pins.c \
 	bufhelper.c \
 	dma.c \
-	i2c.c \
+	pyb_i2c.c \
 	spi.c \
 	qspi.c \
 	uart.c \
diff --git a/ports/stm32/i2c.c b/ports/stm32/pyb_i2c.c
similarity index 100%
rename from ports/stm32/i2c.c
rename to ports/stm32/pyb_i2c.c