diff --git a/arch/arm/src/armv7-m/up_assert.c b/arch/arm/src/armv7-m/up_assert.c
index 54d5ecafa8..72852b772b 100644
--- a/arch/arm/src/armv7-m/up_assert.c
+++ b/arch/arm/src/armv7-m/up_assert.c
@@ -167,7 +167,7 @@ static inline void up_showtasks(void)
   sched_foreach(up_taskdump, NULL);
 }
 #else
-#  define showtasks()
+#  define up_showtasks()
 #endif
 
 /****************************************************************************