diff --git a/include/sysmem.h b/include/sysmem.h
index f6e7a2c105..0c7b94c421 100644
--- a/include/sysmem.h
+++ b/include/sysmem.h
@@ -148,8 +148,7 @@ static inline int sysmem_init(void) { return 0; }
 static inline int sysmem_initr(void) { return 0; }
 static inline int sysmem_free(phys_addr_t base) { return 0; }
 static inline void sysmem_dump(void) {}
-void sysmem_overflow_check(void) {}
-
+static inline void sysmem_overflow_check(void) {}
 __weak int board_sysmem_reserve(struct sysmem *sysmem) { return 0; }
 
 static inline void *sysmem_alloc(enum memblk_id id, phys_size_t size)