diff --git a/arch/arm/src/samd5e5/sam_start.c b/arch/arm/src/samd5e5/sam_start.c
index b1ea7532dc..73b25d1d3b 100644
--- a/arch/arm/src/samd5e5/sam_start.c
+++ b/arch/arm/src/samd5e5/sam_start.c
@@ -120,7 +120,7 @@ void __start(void) __attribute__ ((no_instrument_function));
  ****************************************************************************/
 
 #ifdef CONFIG_DEBUG_FEATURES
-#  define showprogress(c) up_lowputc(c)
+#  define showprogress(c) sam_lowputc(c)
 #else
 #  define showprogress(c)
 #endif