--- a/src/os/unix/ngx_alloc.c
+++ b/src/os/unix/ngx_alloc.c
@@ -21,7 +21,7 @@ ngx_alloc(size_t size, ngx_log_t *log)
     p = malloc(size);
     if (p == NULL) {
         ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
-                      "malloc() %uz bytes failed", size);
+                      "malloc(%uz) failed", size);
     }
 
     ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, log, 0, "malloc: %p:%uz", p, size);
@@ -57,8 +57,7 @@ ngx_memalign(size_t alignment, size_t si
 
     if (err) {
         ngx_log_error(NGX_LOG_EMERG, log, err,
-                      "posix_memalign() %uz bytes aligned to %uz failed",
-                      size, alignment);
+                      "posix_memalign(%uz, %uz) failed", alignment, size);
         p = NULL;
     }
 
@@ -78,8 +77,7 @@ ngx_memalign(size_t alignment, size_t si
     p = memalign(alignment, size);
     if (p == NULL) {
         ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
-                      "memalign() %uz bytes aligned to %uz failed",
-                      size, alignment);
+                      "memalign(%uz, %uz) failed", alignment, size);
     }
 
     ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, log, 0,

--- a/src/os/win32/ngx_alloc.c
+++ b/src/os/win32/ngx_alloc.c
@@ -20,7 +20,7 @@ void *ngx_alloc(size_t size, ngx_log_t *
     p = malloc(size);
     if (p == NULL) {
         ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
-                      "malloc() %uz bytes failed", size);
+                      "malloc(%uz) failed", size);
     }
 
     ngx_log_debug2(NGX_LOG_DEBUG_ALLOC, log, 0, "malloc: %p:%uz", p, size);