diff --git a/c/src/lib/libbsp/shared/include/default-initial-extension.h b/c/src/lib/libbsp/shared/include/default-initial-extension.h
index 44b78e13e9..c3e5ceace7 100644
--- a/c/src/lib/libbsp/shared/include/default-initial-extension.h
+++ b/c/src/lib/libbsp/shared/include/default-initial-extension.h
@@ -44,7 +44,7 @@ void bsp_fatal_extension(
 );
 
 #define BSP_INITIAL_EXTENSION \
-  { NULL, NULL, NULL, NULL, NULL, NULL, NULL, bsp_fatal_extension }
+  { NULL, NULL, NULL, NULL, NULL, NULL, NULL, bsp_fatal_extension, NULL }
 
 #ifdef __cplusplus
 }