diff --git a/bin/fpm-liveness.sh b/bin/fpm-liveness.sh
old mode 100644
new mode 100755
index b98746789..5bff29ff8
--- a/bin/fpm-liveness.sh
+++ b/bin/fpm-liveness.sh
@@ -1,4 +1,5 @@
 #!/usr/bin/env sh
 
 # Exit with code 1 if any php process has been running for more than 1 hour.
-if [ $(ps -o time,comm | grep -c '.*h.*php-fpm') -gt 0 ]; then exit 1; fi
+# shellcheck disable=SC2009
+if [ "$(ps -o time,comm | grep -c '.*h.*php-fpm')" -gt 0 ]; then exit 1; fi
diff --git a/bin/fpm-readiness.sh b/bin/fpm-readiness.sh
old mode 100644
new mode 100755
index b591203e0..7ca83f3e5
--- a/bin/fpm-readiness.sh
+++ b/bin/fpm-readiness.sh
@@ -1,13 +1,13 @@
 #!/usr/bin/env ash
 
-# Send a ping request via fcgi. Use an empty environment with `env -i`.
+# Send a ping request via fast-cgi. Use an empty environment with `env -i`.
 PING_RESPONSE=$(env -i SCRIPT_NAME=/ping SCRIPT_FILENAME=/ping REQUEST_METHOD=GET cgi-fcgi -bind -connect /sock/fpm.sock | tail -1);
 
 # Exit with code 1 if the ping response was not 'pong'.
 if [ "$PING_RESPONSE" != 'pong' ]; then exit 1; fi;
 
-# Request the fpm status via fcgi.
+# Request the fpm status via fast-cgi.
 FPM_STATUS=$(env -i SCRIPT_NAME=/status SCRIPT_FILENAME=/status REQUEST_METHOD=GET cgi-fcgi -bind -connect /sock/fpm.sock);
 
 # Exit with code 1 if the status is 'Could not connect to /sock/fpm.sock'.
-if [ $(echo "$FPM_STATUS" | grep -c 'Could not connect') -gt 0 ]; then exit 1; fi;
+if [ "$(echo "$FPM_STATUS" | grep -c 'Could not connect')" -gt 0 ]; then exit 1; fi;
diff --git a/bin/fpm-status.sh b/bin/fpm-status.sh
old mode 100644
new mode 100755