diff --git a/elf/dl-misc.c b/elf/dl-misc.c
index ad2d8ac964..b529af3f4b 100644
--- a/elf/dl-misc.c
+++ b/elf/dl-misc.c
@@ -396,7 +396,7 @@ __signal_safe_memalign (size_t boundary, size_t size)
     boundary = sizeof (*header);
 
   /* Boundary must be a power of two.  */
-  if (!powerof2(boundary))
+  if (!powerof2 (boundary))
     return NULL;
 
   size_t pg = GLRO (dl_pagesize);