diff --git a/src/defrag.c b/src/defrag.c
index b25fceb1..d67b6e25 100644
--- a/src/defrag.c
+++ b/src/defrag.c
@@ -867,9 +867,8 @@ void defragDictBucketCallback(void *privdata, dictEntry **bucketref) {
  * or not, a false detection can cause the defragmenter to waste a lot of CPU
  * without the possibility of getting any results. */
 float getAllocatorFragmentation(size_t *out_frag_bytes) {
-    size_t resident = server.cron_malloc_stats.allocator_resident;
-    size_t active = server.cron_malloc_stats.allocator_active;
-    size_t allocated = server.cron_malloc_stats.allocator_allocated;
+    size_t resident, active, allocated;
+    zmalloc_get_allocator_info(&allocated, &active, &resident);
     float frag_pct = ((float)active / allocated)*100 - 100;
     size_t frag_bytes = active - allocated;
     float rss_pct = ((float)resident / allocated)*100 - 100;
diff --git a/tests/unit/memefficiency.tcl b/tests/unit/memefficiency.tcl
index c8e95de1..ec71a36b 100644
--- a/tests/unit/memefficiency.tcl
+++ b/tests/unit/memefficiency.tcl
@@ -41,7 +41,7 @@ start_server {tags {"defrag"}} {
         test "Active defrag" {
             r config set activedefrag no
             r config set active-defrag-threshold-lower 5
-            r config set active-defrag-cycle-min 25
+            r config set active-defrag-cycle-min 65
             r config set active-defrag-cycle-max 75
             r config set active-defrag-ignore-bytes 2mb
             r config set maxmemory 100mb
@@ -66,9 +66,10 @@ start_server {tags {"defrag"}} {
                 }
 
                 # Wait for the active defrag to stop working.
-                wait_for_condition 100 100 {
+                wait_for_condition 150 100 {
                     [s active_defrag_running] eq 0
                 } else {
+                    after 120 ;# serverCron only updates the info once in 100ms
                     puts [r info memory]
                     puts [r memory malloc-stats]
                     fail "defrag didn't stop."
@@ -175,6 +176,7 @@ start_server {tags {"defrag"}} {
                 wait_for_condition 500 100 {
                     [s active_defrag_running] eq 0
                 } else {
+                    after 120 ;# serverCron only updates the info once in 100ms
                     puts [r info memory]
                     puts [r memory malloc-stats]
                     fail "defrag didn't stop."