diff --git a/src/zmalloc.c b/src/zmalloc.c
index 639a5fe2b..e36319241 100644
--- a/src/zmalloc.c
+++ b/src/zmalloc.c
@@ -71,17 +71,8 @@ void zlibc_free(void *ptr) {
 #define dallocx(ptr,flags) je_dallocx(ptr,flags)
 #endif
 
-#define update_zmalloc_stat_alloc(__n) do { \
-    size_t _n = (__n); \
-    if (_n&(sizeof(long)-1)) _n += sizeof(long)-(_n&(sizeof(long)-1)); \
-    atomicIncr(used_memory,__n); \
-} while(0)
-
-#define update_zmalloc_stat_free(__n) do { \
-    size_t _n = (__n); \
-    if (_n&(sizeof(long)-1)) _n += sizeof(long)-(_n&(sizeof(long)-1)); \
-    atomicDecr(used_memory,__n); \
-} while(0)
+#define update_zmalloc_stat_alloc(__n) atomicIncr(used_memory,(__n))
+#define update_zmalloc_stat_free(__n) atomicDecr(used_memory,(__n))
 
 static size_t used_memory = 0;
 pthread_mutex_t used_memory_mutex = PTHREAD_MUTEX_INITIALIZER;