diff --git a/include/libafl/user.h b/include/libafl/user.h
index 410cf185da..db2073c328 100644
--- a/include/libafl/user.h
+++ b/include/libafl/user.h
@@ -31,6 +31,7 @@ IntervalTreeNode* libafl_maps_next(IntervalTreeNode* pageflags_maps_node,
 uint64_t libafl_load_addr(void);
 struct image_info* libafl_get_image_info(void);
 
+uint64_t libafl_get_initial_brk(void);
 uint64_t libafl_get_brk(void);
 uint64_t libafl_set_brk(uint64_t new_brk);