diff --git a/lib/memory.c b/lib/memory.c
index 802c07f..1141e40 100644
--- a/lib/memory.c
+++ b/lib/memory.c
@@ -21,7 +21,10 @@
  */
 
 #include <zebra.h>
+/* malloc.h is generally obsolete, however GNU Libc mallinfo wants it. */
+#if defined(HAVE_STDLIB_H) || (defined(GNU_LINUX) && defined(HAVE_MALLINFO))
 #include <malloc.h>
+#endif /* !HAVE_STDLIB_H || HAVE_MALLINFO */
 
 #include "log.h"
 #include "memory.h"