diff --git a/src/psbt/bip371.js b/src/psbt/bip371.js
index 2b53171e0..52ab6ab43 100644
--- a/src/psbt/bip371.js
+++ b/src/psbt/bip371.js
@@ -97,7 +97,7 @@ function checkTaprootScriptPubkey(outputData, newOutputData) {
     const { script: scriptPubkey } = outputData;
     const script = getTaprootScripPubkey(tapInternalKey, tapTree);
     if (scriptPubkey && !scriptPubkey.equals(script))
-      throw new Error('Error adding output. Script or address missmatch.');
+      throw new Error('Error adding output. Script or address mismatch.');
   }
 }
 function getTaprootScripPubkey(tapInternalKey, tapTree) {
diff --git a/test/fixtures/psbt.json b/test/fixtures/psbt.json
index ce8988fa3..33c599fec 100644
--- a/test/fixtures/psbt.json
+++ b/test/fixtures/psbt.json
@@ -615,7 +615,7 @@
           "address": "bc1p3efq8ujsj0qr5xvms7mv89p8cz0crqdtuxe9ms6grqgxc9sgsntslthf6w",
           "value": 410000
         },
-        "exception": "Error adding output. Script or address missmatch."
+        "exception": "Error adding output. Script or address mismatch."
       },
       {
         "description": "Adds taproot output with both taproot and non-taproot fields",
diff --git a/ts_src/psbt/bip371.ts b/ts_src/psbt/bip371.ts
index 752265b0b..667bd1523 100644
--- a/ts_src/psbt/bip371.ts
+++ b/ts_src/psbt/bip371.ts
@@ -129,7 +129,7 @@ function checkTaprootScriptPubkey(
     const { script: scriptPubkey } = outputData as any;
     const script = getTaprootScripPubkey(tapInternalKey, tapTree);
     if (scriptPubkey && !scriptPubkey.equals(script))
-      throw new Error('Error adding output. Script or address missmatch.');
+      throw new Error('Error adding output. Script or address mismatch.');
   }
 }