diff --git a/lib/cm3/vector.c b/lib/cm3/vector.c
index b049526b..f7b0f5cb 100644
--- a/lib/cm3/vector.c
+++ b/lib/cm3/vector.c
@@ -63,7 +63,7 @@ vector_table_t vector_table = {
 	}
 };
 
-void WEAK reset_handler(void)
+void WEAK __attribute__ ((naked)) reset_handler(void)
 {
 	volatile unsigned *src, *dest;