diff --git a/uhdf2/platform/BUILD.gn b/uhdf2/platform/BUILD.gn
index b7fad46664c1774972292b8373cff1a814500944..9d69bd3e052ad9cf0eb1c6124c723bdf587a245e 100755
--- a/uhdf2/platform/BUILD.gn
+++ b/uhdf2/platform/BUILD.gn
@@ -36,6 +36,7 @@ ohos_shared_library("libhdf_platform") {
     "$HDF_FRAMEWORKS/support/platform/src/adc/adc_if_u.c",
     "$HDF_FRAMEWORKS/support/platform/src/gpio/gpio_if_u.c",
     "$HDF_FRAMEWORKS/support/platform/src/i2c/i2c_if_u.c",
+    "$HDF_FRAMEWORKS/support/platform/src/pwm/pwm_if_u.c",
     "$HDF_FRAMEWORKS/support/platform/src/rtc/rtc_base.c",
     "$HDF_FRAMEWORKS/support/platform/src/rtc/rtc_if_u.c",
     "$HDF_FRAMEWORKS/support/platform/src/spi/spi_if_u.c",