diff --git a/targets/TARGET_NUVOTON/TARGET_M2351/PinNames.h b/targets/TARGET_NUVOTON/TARGET_M2351/PinNames.h
index e8a378439de..75fd21f8527 100644
--- a/targets/TARGET_NUVOTON/TARGET_M2351/PinNames.h
+++ b/targets/TARGET_NUVOTON/TARGET_M2351/PinNames.h
@@ -124,13 +124,13 @@ typedef enum {
     A1 = PB_10,
     A2 = PB_9,
     A3 = PB_8,
-    A4 = PB_7,
-    A5 = PB_6,
+    A4 = PB_4,
+    A5 = PB_5,
 
     D0 = PA_8,
     D1 = PA_9,
-    D2 = PB_5,
-    D3 = PB_4,
+    D2 = PB_7,
+    D3 = PB_6,
     D4 = PB_3,
     D5 = PB_2,
     D6 = PC_12,