diff --git a/src/commands/borealis-pg/integrations/register.test.ts b/src/commands/borealis-pg/integrations/register.test.ts
index 98720c0..35685e8 100644
--- a/src/commands/borealis-pg/integrations/register.test.ts
+++ b/src/commands/borealis-pg/integrations/register.test.ts
@@ -13,8 +13,11 @@ const fakeHerokuAuthToken = 'my-fake-heroku-auth-token'
 const fakeHerokuAuthId = 'my-fake-heroku-auth'
 
 const fakeIntegrationName = 'integration1'
-const fakeSshPublicKey =
-  'ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIK5PkBlx+xU/skHZwhR/PPMCKAbQYhgiHlntFkhhC9Q0'
+const fakeSshPublicKeyPieces = [
+  'ssh-ed25519',
+  'AAAAC3NzaC1lZDI1NTE5AAAAIK5PkBlx+xU/skHZwhR/PPMCKAbQYhgiHlntFkhhC9Q0',
+]
+const fakeSshPublicKey = fakeSshPublicKeyPieces.join(' ')
 
 const fakeDbHost = 'my-fake-db-host'
 const fakeDbPort = 33_333
@@ -145,6 +148,42 @@ describe('data integration registration command', () => {
         `SSH Server Public Host Key: ${fakePublicSshHostKey}`)
     })
 
+  defaultTestContext
+    .nock(
+      borealisPgApiBaseUrl,
+      {reqheaders: {authorization: `Bearer ${fakeHerokuAuthToken}`}},
+      api => api
+        .post(
+          `/heroku/resources/${fakeAddonName}/data-integrations`,
+          {
+            integrationName: fakeIntegrationName,
+            sshPublicKey: fakeSshPublicKey,
+            enableWriteAccess: false,
+          })
+        .reply(201, expectedResponseContent))
+    .command([
+      'borealis-pg:integrations:register',
+      '--app',
+      fakeHerokuAppName,
+      '--name',
+      fakeIntegrationName,
+      ...fakeSshPublicKeyPieces,  // Note that the SSH public key is split across two separate args
+    ])
+    .it('registers a data integration with an unquoted SSH public key', ctx => {
+      expect(ctx.stderr).to.endWith(
+        `Registering data integration with add-on ${fakeAddonName}... done\n`)
+      expect(ctx.stdout).to.containIgnoreSpaces(`Database Host: ${fakeDbHost}`)
+      expect(ctx.stdout).to.containIgnoreSpaces(`Database Port: ${fakeDbPort}`)
+      expect(ctx.stdout).to.containIgnoreSpaces(`Database Name: ${fakeDbName}`)
+      expect(ctx.stdout).to.containIgnoreSpaces(`Database Username: ${fakeDbUsername}`)
+      expect(ctx.stdout).to.containIgnoreSpaces(`Database Password: ${fakeDbPassword}`)
+      expect(ctx.stdout).to.containIgnoreSpaces(`SSH Host: ${fakeSshHost}`)
+      expect(ctx.stdout).to.containIgnoreSpaces(`SSH Port: ${fakeSshPort}`)
+      expect(ctx.stdout).to.containIgnoreSpaces(`SSH Username: ${fakeSshUsername}`)
+      expect(ctx.stdout).to.containIgnoreSpaces(
+        `SSH Server Public Host Key: ${fakePublicSshHostKey}`)
+    })
+
   defaultTestContext
     .nock(
       borealisPgApiBaseUrl,
diff --git a/src/commands/borealis-pg/integrations/register.ts b/src/commands/borealis-pg/integrations/register.ts
index 249b91f..05a35d3 100644
--- a/src/commands/borealis-pg/integrations/register.ts
+++ b/src/commands/borealis-pg/integrations/register.ts
@@ -18,7 +18,6 @@ import {createHerokuAuth, fetchAddonAttachmentInfo, removeHerokuAuth} from '../.
 const keyColour = consoleColours.dataFieldName
 const valueColour = consoleColours.dataFieldValue
 
-const sshPublicKeyCliArgName = 'SSH_PUBLIC_KEY'
 const dataIntegrationOptionName = 'name'
 
 export default class RegisterDataIntegrationsCommand extends Command {
@@ -47,13 +46,15 @@ validate the identity of the SSH server if the data integration service
 supports it.`
 
   static examples = [
-    `$ heroku borealis-pg:integrations:register --${appOptionName} sushi --${dataIntegrationOptionName} my_integration1 'ssh-ed25519 SSHPUBLICKEY1==='`,
-    `$ heroku borealis-pg:integrations:register --${writeAccessOptionName} --${appOptionName} sushi --${dataIntegrationOptionName} my_integration2 'ssh-rsa SSHPUBLICKEY2==='`,
+    `$ heroku borealis-pg:integrations:register --${appOptionName} sushi --${dataIntegrationOptionName} my_integration1 ssh-ed25519 SSHPUBLICKEY1===`,
+    `$ heroku borealis-pg:integrations:register --${writeAccessOptionName} --${appOptionName} sushi --${dataIntegrationOptionName} my_integration2 ssh-rsa SSHPUBLICKEY2===`,
   ]
 
+  static strict = false // Receive command argument(s) as an argv array
+
   static args = [
     {
-      name: sshPublicKeyCliArgName,
+      name: 'SSH_PUBLIC_KEY',
       description: 'an SSH public key to authorize for access',
       required: true,
     },
@@ -71,10 +72,13 @@ supports it.`
   }
 
   async run() {
-    const {args, flags} = await this.parse(RegisterDataIntegrationsCommand)
-    const sshPublicKey = args[sshPublicKeyCliArgName]
+    const {argv, flags} = await this.parse(RegisterDataIntegrationsCommand)
+
+    const sshPublicKey = argv.join(' ')
+
     const integrationName = flags[dataIntegrationOptionName]
     const enableWriteAccess = flags[writeAccessOptionName]
+
     const authorization = await createHerokuAuth(this.heroku)
     const attachmentInfo =
       await fetchAddonAttachmentInfo(this.heroku, flags.addon, flags.app, this.error)