diff --git a/bin/tests/system/serve-stale/ns1/named1.conf.in b/bin/tests/system/serve-stale/ns1/named1.conf.in
index 6586849d85..1ef85afad8 100644
--- a/bin/tests/system/serve-stale/ns1/named1.conf.in
+++ b/bin/tests/system/serve-stale/ns1/named1.conf.in
@@ -28,7 +28,7 @@ options {
 	listen-on-v6 { none; };
 	recursion yes;
 	max-stale-ttl 3600;
-	stale-answer-ttl 2;
+	stale-answer-ttl 4;
 	stale-answer-enable yes;
 	stale-cache-enable yes;
 	servfail-ttl 0;
diff --git a/bin/tests/system/serve-stale/tests.sh b/bin/tests/system/serve-stale/tests.sh
index d312c056b6..d1f7f828ab 100755
--- a/bin/tests/system/serve-stale/tests.sh
+++ b/bin/tests/system/serve-stale/tests.sh
@@ -99,7 +99,7 @@ n=$((n+1))
 echo_i "check 'rndc serve-stale status' ($n)"
 ret=0
 $RNDCCMD 10.53.0.1 serve-stale status > rndc.out.test$n 2>&1 || ret=1
-grep '_default: on (stale-answer-ttl=2 max-stale-ttl=3600)' rndc.out.test$n > /dev/null || ret=1
+grep '_default: on (stale-answer-ttl=4 max-stale-ttl=3600)' rndc.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -118,7 +118,7 @@ echo_i "check stale data.example ($n)"
 ret=0
 grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
 grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
-grep "data\.example\..*2.*IN.*TXT.*A text record with a 2 second ttl" dig.out.test$n > /dev/null || ret=1
+grep "data\.example\..*4.*IN.*TXT.*A text record with a 2 second ttl" dig.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -140,7 +140,7 @@ echo_i "check stale othertype.example ($n)"
 ret=0
 grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
 grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
-grep "othertype\.example\..*2.*IN.*CAA.*0.*issue" dig.out.test$n > /dev/null || ret=1
+grep "othertype\.example\..*4.*IN.*CAA.*0.*issue" dig.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -149,7 +149,7 @@ echo_i "check stale nodata.example ($n)"
 ret=0
 grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
 grep "ANSWER: 0," dig.out.test$n > /dev/null || ret=1
-grep "example\..*2.*IN.*SOA" dig.out.test$n > /dev/null || ret=1
+grep "example\..*4.*IN.*SOA" dig.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -158,7 +158,7 @@ echo_i "check stale nxdomain.example ($n)"
 ret=0
 grep "status: NXDOMAIN" dig.out.test$n > /dev/null || ret=1
 grep "ANSWER: 0," dig.out.test$n > /dev/null || ret=1
-grep "example\..*2.*IN.*SOA" dig.out.test$n > /dev/null || ret=1
+grep "example\..*4.*IN.*SOA" dig.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -192,7 +192,7 @@ n=$((n+1))
 echo_i "check 'rndc serve-stale status' ($n)"
 ret=0
 $RNDCCMD 10.53.0.1 serve-stale status > rndc.out.test$n 2>&1 || ret=1
-grep '_default: off (rndc) (stale-answer-ttl=2 max-stale-ttl=3600)' rndc.out.test$n > /dev/null || ret=1
+grep '_default: off (rndc) (stale-answer-ttl=4 max-stale-ttl=3600)' rndc.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -232,6 +232,9 @@ grep "status: SERVFAIL" dig.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
+#
+# Test enabling serve-stale via rndc.
+#
 n=$((n+1))
 echo_i "running 'rndc serve-stale on' ($n)"
 ret=0
@@ -243,7 +246,7 @@ n=$((n+1))
 echo_i "check 'rndc serve-stale status' ($n)"
 ret=0
 $RNDCCMD 10.53.0.1 serve-stale status > rndc.out.test$n 2>&1 || ret=1
-grep '_default: on (rndc) (stale-answer-ttl=2 max-stale-ttl=3600)' rndc.out.test$n > /dev/null || ret=1
+grep '_default: on (rndc) (stale-answer-ttl=4 max-stale-ttl=3600)' rndc.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -260,7 +263,7 @@ echo_i "check stale data.example (serve-stale on) ($n)"
 ret=0
 grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
 grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
-grep "data\.example\..*2.*IN.*TXT.*A text record with a 2 second ttl" dig.out.test$n > /dev/null || ret=1
+grep "data\.example\..*4.*IN.*TXT.*A text record with a 2 second ttl" dig.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -269,7 +272,7 @@ echo_i "check stale othertype.example (serve-stale on) ($n)"
 ret=0
 grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
 grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
-grep "othertype\.example\..*2.*IN.*CAA.*0.*issue" dig.out.test$n > /dev/null || ret=1
+grep "othertype\.example\..*4.*IN.*CAA.*0.*issue" dig.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -278,7 +281,7 @@ echo_i "check stale nodata.example (serve-stale on) ($n)"
 ret=0
 grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
 grep "ANSWER: 0," dig.out.test$n > /dev/null || ret=1
-grep "example\..*2.*IN.*SOA" dig.out.test$n > /dev/null || ret=1
+grep "example\..*4.*IN.*SOA" dig.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -287,7 +290,7 @@ echo_i "check stale nxdomain.example (serve-stale on) ($n)"
 ret=0
 grep "status: NXDOMAIN" dig.out.test$n > /dev/null || ret=1
 grep "ANSWER: 0," dig.out.test$n > /dev/null || ret=1
-grep "example\..*2.*IN.*SOA" dig.out.test$n > /dev/null || ret=1
+grep "example\..*4.*IN.*SOA" dig.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -309,7 +312,7 @@ n=$((n+1))
 echo_i "check 'rndc serve-stale status' ($n)"
 ret=0
 $RNDCCMD 10.53.0.1 serve-stale status > rndc.out.test$n 2>&1 || ret=1
-grep '_default: on (stale-answer-ttl=2 max-stale-ttl=3600)' rndc.out.test$n > /dev/null || ret=1
+grep '_default: on (stale-answer-ttl=4 max-stale-ttl=3600)' rndc.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -326,7 +329,7 @@ echo_i "check stale data.example (serve-stale reset) ($n)"
 ret=0
 grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
 grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
-grep "data\.example\..*2.*IN.*TXT.*A text record with a 2 second ttl" dig.out.test$n > /dev/null || ret=1
+grep "data\.example\..*4.*IN.*TXT.*A text record with a 2 second ttl" dig.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -335,7 +338,7 @@ echo_i "check stale othertype.example (serve-stale reset) ($n)"
 ret=0
 grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
 grep "ANSWER: 1," dig.out.test$n > /dev/null || ret=1
-grep "othertype.example\..*2.*IN.*CAA.*0.*issue" dig.out.test$n > /dev/null || ret=1
+grep "othertype.example\..*4.*IN.*CAA.*0.*issue" dig.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -344,7 +347,7 @@ echo_i "check stale nodata.example (serve-stale reset) ($n)"
 ret=0
 grep "status: NOERROR" dig.out.test$n > /dev/null || ret=1
 grep "ANSWER: 0," dig.out.test$n > /dev/null || ret=1
-grep "example\..*2.*IN.*SOA" dig.out.test$n > /dev/null || ret=1
+grep "example\..*4.*IN.*SOA" dig.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -353,7 +356,7 @@ echo_i "check stale nxdomain.example (serve-stale reset) ($n)"
 ret=0
 grep "status: NXDOMAIN" dig.out.test$n > /dev/null || ret=1
 grep "ANSWER: 0," dig.out.test$n > /dev/null || ret=1
-grep "example\..*2.*IN.*SOA" dig.out.test$n > /dev/null || ret=1
+grep "example\..*4.*IN.*SOA" dig.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))
 
@@ -368,7 +371,7 @@ n=$((n+1))
 echo_i "check 'rndc serve-stale status' ($n)"
 ret=0
 $RNDCCMD 10.53.0.1 serve-stale status > rndc.out.test$n 2>&1 || ret=1
-grep '_default: off (rndc) (stale-answer-ttl=2 max-stale-ttl=3600)' rndc.out.test$n > /dev/null || ret=1
+grep '_default: off (rndc) (stale-answer-ttl=4 max-stale-ttl=3600)' rndc.out.test$n > /dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status+ret))