diff --git a/modules/hal_wch/hal_ch32fun.h b/modules/hal_wch/hal_ch32fun.h
index 2349cbb2159..6e9c3782d78 100644
--- a/modules/hal_wch/hal_ch32fun.h
+++ b/modules/hal_wch/hal_ch32fun.h
@@ -23,6 +23,9 @@
 #endif
 
 #if defined(CONFIG_SOC_SERIES_QINGKE_V4C)
+#if defined(CONFIG_SOC_CH32V208)
+#define CH32V20x_D8W 1
+#endif
 #define CH32V20x 1
 #include <ch32fun.h>
 #endif