diff --git a/src/pages.c b/src/pages.c
index 2a9b7e37..05b0d690 100644
--- a/src/pages.c
+++ b/src/pages.c
@@ -219,6 +219,7 @@ os_overcommits_proc(void)
 		return (false); /* Error. */
 
 	nread = read(fd, &buf, sizeof(buf));
+	close(fd);
 	if (nread < 1)
 		return (false); /* Error. */
 	/*