diff --git a/bin/tools/named-nzd2nzf.c b/bin/tools/named-nzd2nzf.c
index f2ee317b92..1c5406e07b 100644
--- a/bin/tools/named-nzd2nzf.c
+++ b/bin/tools/named-nzd2nzf.c
@@ -9,7 +9,7 @@
 #include "config.h"
 
 #ifndef HAVE_LMDB
-#error This program requires the LMDBlibrary.
+#error This program requires the LMDB library.
 #endif
 
 #include <stdio.h>