diff --git a/include/configs/koelsch.h b/include/configs/koelsch.h
index 21667d1f78..e015e9091b 100644
--- a/include/configs/koelsch.h
+++ b/include/configs/koelsch.h
@@ -89,6 +89,7 @@
 /* SCIF */
 #define CONFIG_SCIF_CONSOLE
 #define CONFIG_CONS_SCIF0
+#define CONFIG_SCIF_USE_EXT_CLK
 #undef	CONFIG_SYS_CONSOLE_INFO_QUIET
 #undef	CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
 #undef	CONFIG_SYS_CONSOLE_ENV_OVERWRITE