diff --git a/cmd/pj-rehearse/main.go b/cmd/pj-rehearse/main.go
index f8a2fc2c863..2129b6c7f02 100644
--- a/cmd/pj-rehearse/main.go
+++ b/cmd/pj-rehearse/main.go
@@ -80,20 +80,20 @@ func validateOptions(o options) error {
 }
 
 const (
-	misconfigurationOutput = `[ERROR] pj-rehearse: misconfiguration
+	misconfigurationOutput = `ERROR: pj-rehearse: misconfiguration
 
 pj-rehearse could not process its necessary inputs properly. No rehearsal
 jobs were run. This is likely a pj-rehearse job configuration problem.`
-	rehearseFailureOutput = `[ERROR] pj-rehearse: rehearsal tool failure
+	rehearseFailureOutput = `ERROR: pj-rehearse: rehearsal tool failure
 
 pj-rehearse attempted to submit jobs for rehearsal, but it failed to either
 submit them or to fetch their results. This is either a pj-rehearse bug or
 an infrastructure issue.`
-	jobsFailureOutput = `[ERROR] pj-rehearse: rehearsed jobs failure
+	jobsFailureOutput = `ERROR: pj-rehearse: rehearsed jobs failure
 
 pj-rehearse rehearsed jobs and at least one of them failed. This means that
 job would fail when executed against the current HEAD of the target branch.`
-	failedSetupOutput = `[ERROR] pj-rehearse: setup failure
+	failedSetupOutput = `ERROR: pj-rehearse: setup failure
 
 pj-rehearse failed to finish all setup necessary to perform job rehearsals.
 This is either a pj-rehearse bug or an infrastructure failure.`
diff --git a/test/pj-rehearse-integration/run.sh b/test/pj-rehearse-integration/run.sh
index 8649f35a4a4..558a75b5a19 100755
--- a/test/pj-rehearse-integration/run.sh
+++ b/test/pj-rehearse-integration/run.sh
@@ -53,7 +53,7 @@ make_testing_repository
 readonly REHEARSED_JOBS="${WORKDIR}/rehearsals.yaml"
 echo "[INFO] Running pj-rehearse in dry-mode..."
 if ! pj-rehearse --dry-run=true --no-fail=false --allow-volumes=true --candidate-path "${FAKE_OPENSHIFT_RELEASE}" > "${REHEARSED_JOBS}" 2> "${WORKDIR}/pj-rehearse-stderr.log"; then
-  echo "[ERROR] pj-rehearse failed:"
+  echo "ERROR: pj-rehearse failed:"
   cat "${WORKDIR}/pj-rehearse-stderr.log"
   exit 1
 fi
@@ -61,8 +61,8 @@ fi
 echo "[INFO] Validating created rehearsals"
 if ! output="$(compare_to_expected "${REHEARSED_JOBS}")"; then
   cat "${WORKDIR}/pj-rehearse-stderr.log"
-  output="$( printf -- "${output}" | sed 's/^/[ERROR] /' )"
-  printf "[ERROR] pj-rehearse output differs from expected:\n\n$output\n"
+  output="$( printf -- "${output}" | sed 's/^/ERROR: /' )"
+  printf "ERROR: pj-rehearse output differs from expected:\n\n$output\n"
   exit 1
 fi
 
diff --git a/test/prowgen-integration/run.sh b/test/prowgen-integration/run.sh
index fac6a3c2e49..a8fc29b0fe9 100755
--- a/test/prowgen-integration/run.sh
+++ b/test/prowgen-integration/run.sh
@@ -25,8 +25,8 @@ ci-operator-prowgen --from-dir "${input_config_dir}" --to-dir "${generated_outpu
 echo "[INFO] Validating generated Prow jobs..."
 if ! diff -Naupr "${expected_output_jobs_dir}" "${generated_output_jobs_dir}"> "${workdir}/diff"; then
   cat << EOF
-[ERROR] Incorrect Prow jobs were generated!
-[ERROR] The following errors were found:
+ERROR: Incorrect Prow jobs were generated!
+ERROR: The following errors were found:
 
 EOF
   cat "${workdir}/diff"
@@ -43,8 +43,8 @@ determinize-prow-jobs --prow-jobs-dir "${determinized_output_jobs_dir}"
 echo "[INFO] Validating determinized Prow jobs..."
 if ! diff -Naupr "${determinized_output_jobs_dir}" "${generated_output_jobs_dir}"> "${workdir}/diff"; then
   cat << EOF
-[ERROR] Prow job generator did not output determinized jobs!
-[ERROR] The following errors were found:
+ERROR: Prow job generator did not output determinized jobs!
+ERROR: The following errors were found:
 
 EOF
   cat "${workdir}/diff"
diff --git a/test/validate-prowgen-breaking-changes.sh b/test/validate-prowgen-breaking-changes.sh
index 25a11d8cc5c..b030690fb94 100755
--- a/test/validate-prowgen-breaking-changes.sh
+++ b/test/validate-prowgen-breaking-changes.sh
@@ -14,11 +14,11 @@ ci-operator-prowgen --from-dir "${workdir}/release/ci-operator/config" --to-dir
 pushd "${workdir}/release"
 
 if [ -n "$(git status --porcelain)" ]; then
-  echo "[ERROR] Changes in openshift/release:"
+  echo "ERROR: Changes in openshift/release:"
   git diff
-  echo "[ERROR] Running Prowgen in openshift/release results in changes ^^^"
-  echo "[ERROR] To avoid breaking openshift/release for everyone you should regenerate"
-  echo "[ERROR] the jobs there and merge the changes ASAP after this change to Prowgen"
+  echo "ERROR: Running Prowgen in openshift/release results in changes ^^^"
+  echo "ERROR: To avoid breaking openshift/release for everyone you should regenerate"
+  echo "ERROR: the jobs there and merge the changes ASAP after this change to Prowgen"
   popd
   exit 1
 else