diff --git a/changelog.d/18274.docker b/changelog.d/18274.docker
new file mode 100644
index 0000000000..57b81d8f4e
--- /dev/null
+++ b/changelog.d/18274.docker
@@ -0,0 +1 @@
+Make some improvements to the prefix-log script in the workers image.
diff --git a/docker/prefix-log b/docker/prefix-log
index 32dddbbfd4..2a38de5686 100755
--- a/docker/prefix-log
+++ b/docker/prefix-log
@@ -10,6 +10,9 @@
 # '-W interactive' is a `mawk` extension which disables buffering on stdout and sets line-buffered reads on
 # stdin. The effect is that the output is flushed after each line, rather than being batched, which helps reduce
 # confusion due to to interleaving of the different processes.
-exec 1> >(awk -W interactive '{print "'"${SUPERVISOR_PROCESS_NAME}"' | "$0 }' >&1)
-exec 2> >(awk -W interactive '{print "'"${SUPERVISOR_PROCESS_NAME}"' | "$0 }' >&2)
+prefixer() {
+    mawk -W interactive '{printf("%s | %s\n", ENVIRON["SUPERVISOR_PROCESS_NAME"], $0); fflush() }'
+}
+exec 1> >(prefixer)
+exec 2> >(prefixer >&2)
 exec "$@"