diff --git a/bin/behat-cleanup.sh b/bin/behat-cleanup.sh
index 9bcd07e..fd777be 100755
--- a/bin/behat-cleanup.sh
+++ b/bin/behat-cleanup.sh
@@ -4,7 +4,7 @@
 # Delete the Pantheon site environment after the Behat test suite has run.
 ###
 
-if ! terminus whoami > dev/null; then
+if terminus whoami > dev/null; then
 	echo "Terminus unauthenticated; assuming unauthenticated build"
 	exit 0
 fi
diff --git a/bin/behat-prepare.sh b/bin/behat-prepare.sh
index cb34092..3ea8836 100755
--- a/bin/behat-prepare.sh
+++ b/bin/behat-prepare.sh
@@ -6,7 +6,7 @@
 # such that it can be run a second time if a step fails.
 ###
 
-if ! terminus whoami > dev/null; then
+if terminus whoami > dev/null; then
 	echo "Terminus unauthenticated; assuming unauthenticated build"
 	exit 0
 fi
diff --git a/bin/behat-test.sh b/bin/behat-test.sh
index 1c31c24..7c59d4b 100755
--- a/bin/behat-test.sh
+++ b/bin/behat-test.sh
@@ -4,7 +4,7 @@
 # Execute the Behat test suite against a prepared Pantheon site environment.
 ###
 
-if ! terminus whoami > dev/null; then
+if terminus whoami > dev/null; then
 	echo "Terminus unauthenticated; assuming unauthenticated build"
 	exit 0
 fi