diff --git a/index.d.ts b/index.d.ts
index e1f8c96..469c6d0 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,4 +1,5 @@
 export declare const preferredSaultSteMarieSpelling = "Sault Ste. Marie";
+export declare const canadaPostSaultSteMarieSpelling = "S-STE-MARIE";
 /**
  * Determines whether a word is a spelling of Sault Ste. Marie.
  * @param {string} possibleSpelling - A possible spelling of Sault Ste. Marie.
diff --git a/index.js b/index.js
index f3612e7..1da440e 100644
--- a/index.js
+++ b/index.js
@@ -1,4 +1,5 @@
 export const preferredSaultSteMarieSpelling = 'Sault Ste. Marie';
+export const canadaPostSaultSteMarieSpelling = 'S-STE-MARIE';
 const lowerCaseSaultSteMarieSpellings = new Set([
     's s marie',
     's ste marie',
diff --git a/index.ts b/index.ts
index c4bbef3..7056afd 100644
--- a/index.ts
+++ b/index.ts
@@ -1,5 +1,7 @@
 export const preferredSaultSteMarieSpelling = 'Sault Ste. Marie'
 
+export const canadaPostSaultSteMarieSpelling = 'S-STE-MARIE'
+
 const lowerCaseSaultSteMarieSpellings = new Set([
   's s marie',
   's ste marie',
diff --git a/test/test.js b/test/test.js
index 817be8a..1c0a3b6 100644
--- a/test/test.js
+++ b/test/test.js
@@ -11,7 +11,7 @@ describe('isSaultSteMarie()', () => {
 });
 describe('fixSaultSteMarie()', () => {
     it('Uses the preferred spelling of Sault Ste. Marie', () => {
-        assert.strictEqual(isSaultSteMarie.fixSaultSteMarie('sault  ste marie'), isSaultSteMarie.preferredSaultSteMarieSpelling);
+        assert.strictEqual(isSaultSteMarie.fixSaultSteMarie(isSaultSteMarie.canadaPostSaultSteMarieSpelling), isSaultSteMarie.preferredSaultSteMarieSpelling);
     });
     it('Uses a given spelling of Sault Ste. Marie', () => {
         const givenSpelling = 'the soo';
diff --git a/test/test.ts b/test/test.ts
index f6a1d1b..30204a1 100644
--- a/test/test.ts
+++ b/test/test.ts
@@ -16,7 +16,9 @@ describe('isSaultSteMarie()', () => {
 describe('fixSaultSteMarie()', () => {
   it('Uses the preferred spelling of Sault Ste. Marie', () => {
     assert.strictEqual(
-      isSaultSteMarie.fixSaultSteMarie('sault  ste marie'),
+      isSaultSteMarie.fixSaultSteMarie(
+        isSaultSteMarie.canadaPostSaultSteMarieSpelling
+      ),
       isSaultSteMarie.preferredSaultSteMarieSpelling
     )
   })