1 files changed, 1 insertions, 1 deletions
diff --git a/test9.c b/test9.c
index b96fbde..d3d8b09 100644
--- a/test9.c
+++ b/test9.c
@@ -3,7 +3,7 @@
 #include "armv7m.h"
 #include "testme.h"
 
-char _main_stack_top;
+extern char _main_stack_top;
 
 /* defintion must match test-m-test9.S */
 struct early_state_t {