diff --git a/buildTestImages.ts b/buildTestImages.ts
index 7f89b68b..05dfff77 100755
--- a/buildTestImages.ts
+++ b/buildTestImages.ts
@@ -2,7 +2,7 @@
 
 import { parseArgs } from 'node:util';
 import { execSync } from 'node:child_process';
-import { imageNameForProposalTest, readProposals } from './common';
+import { imageNameForProposal, readProposals } from './common';
 import { refreshDockerfile } from './makeDockerfile';
 
 refreshDockerfile();
@@ -25,7 +25,7 @@ for (const proposal of proposals) {
   if (!dry) {
     console.log(`\nBuilding test image for proposal ${proposal.proposalName}`);
   }
-  const { name, target } = imageNameForProposalTest(proposal);
+  const { name, target } = imageNameForProposal(proposal, 'test');
   // 'load' to ensure the images are output to the Docker client. Seems to be necessary
   // for the CI docker/build-push-action to re-use the cached stages.
   const cmd = `docker buildx build --load --tag ${name} --target ${target} .`;
diff --git a/common.ts b/common.ts
index 582e967e..b50d454e 100644
--- a/common.ts
+++ b/common.ts
@@ -62,16 +62,11 @@ export function lastPassedProposal(proposals: ProposalInfo[]): ProposalInfo {
   return last;
 }
 
-export function imageNameForProposalEval(proposal) {
-  const target = `eval-${proposal.proposalName}`;
-  return {
-    name: `${repository}:${target}`,
-    target,
-  };
-}
-
-export function imageNameForProposalTest(proposal) {
-  const target = `test-${proposal.proposalName}`;
+export function imageNameForProposal(
+  proposal: ProposalCommon,
+  stage: 'test' | 'eval',
+) {
+  const target = `${stage}-${proposal.proposalName}`;
   return {
     name: `${repository}:${target}`,
     target,
diff --git a/debugEvalImage.ts b/debugEvalImage.ts
index c63277e1..c0bba518 100755
--- a/debugEvalImage.ts
+++ b/debugEvalImage.ts
@@ -5,7 +5,7 @@
  */
 import { execSync } from 'node:child_process';
 import { parseArgs } from 'node:util';
-import { imageNameForProposalEval, readOneProposal } from './common';
+import { imageNameForProposal, readOneProposal } from './common';
 
 const options = {
   match: { short: 'm', type: 'string' },
@@ -28,7 +28,7 @@ console.log(
 );
 console.log('And within that shell:');
 console.log('  cd /usr/src/proposals/"$PROPOSAL_PATH/" && ./eval.sh');
-const { name } = imageNameForProposalEval(proposal);
+const { name } = imageNameForProposal(proposal, 'eval');
 // start the chain
 const cmd = `docker run --mount type=bind,src=.,dst=/usr/src/a3p -it --entrypoint bash ${name}`;
 execSync(cmd, { stdio: 'inherit' });
diff --git a/debugTestImage.ts b/debugTestImage.ts
index e7142eb9..4aebac55 100755
--- a/debugTestImage.ts
+++ b/debugTestImage.ts
@@ -5,7 +5,7 @@
  */
 import { execSync } from 'node:child_process';
 import { parseArgs } from 'node:util';
-import { imageNameForProposalTest, readOneProposal } from './common';
+import { imageNameForProposal, readOneProposal } from './common';
 
 const options = {
   match: { short: 'm', type: 'string' },
@@ -31,7 +31,7 @@ To get the latest code from your checkout of the repo:
 `,
 );
 
-const { name } = imageNameForProposalTest(proposal);
+const { name } = imageNameForProposal(proposal, 'test');
 // start the chain
 const cmd = `docker run --mount type=bind,src=.,dst=/usr/src/a3p -it --entrypoint /usr/src/upgrade-test-scripts/start_agd.sh ${name}`;
 execSync(cmd, { stdio: 'inherit' });
diff --git a/runTestImages.ts b/runTestImages.ts
index b9dd11ba..786a7416 100755
--- a/runTestImages.ts
+++ b/runTestImages.ts
@@ -2,7 +2,7 @@
 
 import { parseArgs } from 'node:util';
 import { execSync } from 'node:child_process';
-import { imageNameForProposalTest, readProposals } from './common';
+import { imageNameForProposal, readProposals } from './common';
 
 const options = {
   match: { short: 'm', type: 'string' },
@@ -19,7 +19,7 @@ const proposals = match
 
 for (const proposal of proposals) {
   console.log(`Running test image for proposal ${proposal.proposalName}`);
-  const { name } = imageNameForProposalTest(proposal);
+  const { name } = imageNameForProposal(proposal, 'test');
   // 'rm' to remove the container when it exits
   const cmd = `docker run --rm ${name}`;
   execSync(cmd, { stdio: 'inherit' });