Clarify error message

diff --git a/m4/pdns_check_cdb.m4 b/m4/pdns_check_cdb.m4
index e31680cb0664dac4b315271abfb90e62189f1d55..fdc00e578e42ecda5c3537a46ed92bff963b156d 100644 (file)
--- a/m4/pdns_check_cdb.m4
+++ b/m4/pdns_check_cdb.m4
@@ -6,7 +6,7 @@ AC_DEFUN([PDNS_CHECK_CDB],[
         [CDB_LIBS="-lcdb"],
         [AC_MSG_ERROR([Could not find libcdb])]
       )],
-      [AC_MSG_ERROR([Could not find cdb])]
+      [AC_MSG_ERROR([Could not find cdb.h])]
     )]
   )
   AC_SUBST(CDB_LIBS)