diff --git a/adb/adb.h b/adb/adb.h
index 3d2a77b..0aa98d3 100644
--- a/adb/adb.h
+++ b/adb/adb.h
@@ -366,7 +366,15 @@
 #define print_packet(tag,p) do {} while (0)
 #endif
 
-#define DEFAULT_ADB_PORT 5037
+#if ADB_HOST_ON_TARGET
+/* adb and adbd are coexisting on the target, so use 5038 for adb
+ * to avoid conflicting with adbd's usage of 5037
+ */
+#  define DEFAULT_ADB_PORT 5038
+#else
+#  define DEFAULT_ADB_PORT 5037
+#endif
+
 #define DEFAULT_ADB_LOCAL_TRANSPORT_PORT 5555
 
 #define ADB_CLASS              0xff