diff --git a/config.h b/config.h
index dd1832e..c19a5de 100644
--- a/config.h
+++ b/config.h
@@ -3,5 +3,6 @@
 
 #define GUARD_SLABS true
 #define WRITE_AFTER_FREE_CHECK true
+#define SLOT_RANDOMIZE true
 
 #endif
diff --git a/malloc.c b/malloc.c
index 04e2c77..1d27dc1 100644
--- a/malloc.c
+++ b/malloc.c
@@ -204,13 +204,16 @@ static size_t get_free_slot(struct random_state *rng, size_t slots, struct slab_
         fatal_error("no zero bits");
     }
 
-    // randomize start location for linear search (uniform random choice is too slow)
-    uint64_t random_split = ~(~0UL << get_random_u16_uniform(rng, slots));
+    if (SLOT_RANDOMIZE) {
+        // randomize start location for linear search (uniform random choice is too slow)
+        uint64_t random_split = ~(~0UL << get_random_u16_uniform(rng, slots));
 
-    size_t slot = ffzl(masked | random_split);
-    if (slot) {
-        return slot - 1;
+        size_t slot = ffzl(masked | random_split);
+        if (slot) {
+            return slot - 1;
+        }
     }
+
     return ffzl(masked) - 1;
 }