diff --git a/scripts/base/protocols/dns/main.bro b/scripts/base/protocols/dns/main.bro
index 127a06b5a0..c98f0b2201 100644
--- a/scripts/base/protocols/dns/main.bro
+++ b/scripts/base/protocols/dns/main.bro
@@ -113,11 +113,6 @@ export {
 	## DNS message query/transaction ID.
 	type PendingMessages: table[count] of Queue::Queue;
 
-	## The amount of time that DNS queries or replies for a given
-	## query/transaction ID are allowed to be queued while waiting for
-	## a matching reply or query.
-	const pending_msg_expiry_interval = 2min &redef;
-
 	## Give up trying to match pending DNS queries or replies for a given
 	## query/transaction ID once this number of unmatched queries or replies
 	## is reached (this shouldn't happen unless either the DNS server/resolver
diff --git a/scripts/base/utils/exec.bro b/scripts/base/utils/exec.bro
index 61488a1249..5079396bbc 100644
--- a/scripts/base/utils/exec.bro
+++ b/scripts/base/utils/exec.bro
@@ -42,9 +42,6 @@ export {
 	## Returns: A record representing the full results from the
 	##          external program execution.
 	global run: function(cmd: Command): Result;
-
-	## The system directory for temporary files.
-	const tmp_dir = "/tmp" &redef;
 }
 
 # Indexed by command uid.