diff --git a/usr.sbin/pkg_install/info/info.h b/usr.sbin/pkg_install/info/info.h
index d90ba220352..56bac9feae5 100644
--- a/usr.sbin/pkg_install/info/info.h
+++ b/usr.sbin/pkg_install/info/info.h
@@ -24,7 +24,7 @@
 #define _INST_INFO_H_INCLUDE
 
 #ifndef MAXINDEXSIZE
-#define MAXINDEXSIZE 60
+#define MAXINDEXSIZE 59
 #endif
 
 #ifndef MAXNAMESIZE