diff --git a/src/main/target/AIR32/target.mk b/src/main/target/AIR32/target.mk
index 8613619434..7151bafad9 100644
--- a/src/main/target/AIR32/target.mk
+++ b/src/main/target/AIR32/target.mk
@@ -9,6 +9,6 @@ TARGET_SRC = \
             drivers/compass_hmc5883l.c \
             drivers/light_ws2811strip.c \
             drivers/light_ws2811strip_stm32f30x.c \
-			drivers/inverter.c \
+            drivers/inverter.c \
             drivers/serial_softserial.c