diff --git a/lib/tlsf/src/tlsf.c b/lib/tlsf/src/tlsf.c
index d9d5a7b921..e408fe2909 100644
--- a/lib/tlsf/src/tlsf.c
+++ b/lib/tlsf/src/tlsf.c
@@ -506,7 +506,9 @@ size_t add_new_area(void *area, size_t area_size, void *mem_pool)
     area_info_t *ptr, *ptr_prev, *ai;
     bhdr_t *ib0, *b0, *lb0, *ib1, *b1, *lb1, *next_b;
 
-    memset(area, 0, area_size);
+    /* FW 28-10-17: disabled memset due to crashes on ARM. Functions
+     * fine without it. */
+    /* memset(area, 0, area_size); */
     ptr = tlsf->area_head;
     ptr_prev = 0;