diff --git a/src/vppinfra/dlmalloc.h b/src/vppinfra/dlmalloc.h
index b8adf74..5fcaf7c 100644
--- a/src/vppinfra/dlmalloc.h
+++ b/src/vppinfra/dlmalloc.h
@@ -1447,6 +1447,8 @@
 */
 DLMALLOC_EXPORT int mspace_mallopt(int, int);
 
+DLMALLOC_EXPORT void* mspace_realloc_in_place (mspace msp, void *oldmem, size_t bytes);
+
 DLMALLOC_EXPORT void* mspace_get_aligned (mspace msp,
                                           unsigned long n_user_data_bytes,
                                           unsigned long align,