diff --git a/dep/jemalloc/jemalloc_internal_defs.h.in.cmake b/dep/jemalloc/jemalloc_internal_defs.h.in.cmake
index 214435283d6..5af111726be 100644
--- a/dep/jemalloc/jemalloc_internal_defs.h.in.cmake
+++ b/dep/jemalloc/jemalloc_internal_defs.h.in.cmake
@@ -268,7 +268,7 @@
  *                                 MADV_FREE, though typically with higher
  *                                 system overhead.
  */
-#define JEMALLOC_PURGE_MADVISE_FREE 
+/*#define JEMALLOC_PURGE_MADVISE_FREE*/ 
 #define JEMALLOC_PURGE_MADVISE_DONTNEED 
 #define JEMALLOC_PURGE_MADVISE_DONTNEED_ZEROS 1