diff --git a/imap-core/lib/commands/copy.js b/imap-core/lib/commands/copy.js
index e753d21e..2d99d585 100644
--- a/imap-core/lib/commands/copy.js
+++ b/imap-core/lib/commands/copy.js
@@ -35,7 +35,7 @@ module.exports = {
             return callback(new Error('Invalid mailbox argument for ' + cmd));
         }
 
-        if (!imapTools.validateSequnce(range)) {
+        if (!imapTools.validateSequence(range)) {
             return callback(new Error('Invalid sequence set for ' + cmd));
         }
 
diff --git a/imap-core/lib/commands/fetch.js b/imap-core/lib/commands/fetch.js
index fbc21972..2e34fe3f 100644
--- a/imap-core/lib/commands/fetch.js
+++ b/imap-core/lib/commands/fetch.js
@@ -43,7 +43,7 @@ module.exports = {
 
         let isUid = (command.command || '').toString().toUpperCase() === 'UID FETCH' ? true : false;
         let range = (command.attributes[0] && command.attributes[0].value) || '';
-        if (!imapTools.validateSequnce(range)) {
+        if (!imapTools.validateSequence(range)) {
             return callback(new Error('Invalid sequence set for ' + command.command));
         }
         let messages = imapTools.getMessageRange(this.selected.uidList, range, isUid);
diff --git a/imap-core/lib/commands/move.js b/imap-core/lib/commands/move.js
index e2719533..e30b89c8 100644
--- a/imap-core/lib/commands/move.js
+++ b/imap-core/lib/commands/move.js
@@ -35,7 +35,7 @@ module.exports = {
             return callback(new Error('Invalid mailbox argument for ' + cmd));
         }
 
-        if (!imapTools.validateSequnce(range)) {
+        if (!imapTools.validateSequence(range)) {
             return callback(new Error('Invalid sequence set for ' + cmd));
         }
 
diff --git a/imap-core/lib/commands/search.js b/imap-core/lib/commands/search.js
index fb71cb0f..8c672490 100644
--- a/imap-core/lib/commands/search.js
+++ b/imap-core/lib/commands/search.js
@@ -167,7 +167,7 @@ function parseQueryTerms(terms, uidList) {
 
         if (!termType) {
             // try if it is a sequence set
-            if (imapTools.validateSequnce(term)) {
+            if (imapTools.validateSequence(term)) {
                 // resolve sequence list to an array of UID values
                 curTerm = ['uid', imapTools.getMessageRange(uidList, term, false)];
             } else {
@@ -179,7 +179,7 @@ function parseQueryTerms(terms, uidList) {
                 if (termType[i] === 'expression') {
                     curTerm.push(getTerm(level + 1));
                 } else if (termType[i] === 'sequence') {
-                    if (!imapTools.validateSequnce(terms[pos])) {
+                    if (!imapTools.validateSequence(terms[pos])) {
                         throw new Error('Invalid sequence set for ' + term.toUpperCase());
                     }
                     // resolve sequence list to an array of UID values
diff --git a/imap-core/lib/commands/store.js b/imap-core/lib/commands/store.js
index 2e7daa72..bb6426be 100644
--- a/imap-core/lib/commands/store.js
+++ b/imap-core/lib/commands/store.js
@@ -75,7 +75,7 @@ module.exports = {
             silent = true;
         }
 
-        if (!imapTools.validateSequnce(range)) {
+        if (!imapTools.validateSequence(range)) {
             return callback(new Error('Invalid sequence set for STORE'));
         }
 
diff --git a/imap-core/lib/commands/uid-expunge.js b/imap-core/lib/commands/uid-expunge.js
index d0bc4fa2..bb0f4e03 100644
--- a/imap-core/lib/commands/uid-expunge.js
+++ b/imap-core/lib/commands/uid-expunge.js
@@ -29,7 +29,7 @@ module.exports = {
         }
 
         let range = (command.attributes[0] && command.attributes[0].value) || '';
-        if (!imapTools.validateSequnce(range)) {
+        if (!imapTools.validateSequence(range)) {
             return callback(new Error('Invalid sequence set for UID EXPUNGE'));
         }
         let messages = imapTools.getMessageRange(this.selected.uidList, range, true);
diff --git a/imap-core/lib/commands/uid-store.js b/imap-core/lib/commands/uid-store.js
index c52f3d08..a946fb60 100644
--- a/imap-core/lib/commands/uid-store.js
+++ b/imap-core/lib/commands/uid-store.js
@@ -65,7 +65,7 @@ module.exports = {
             silent = true;
         }
 
-        if (!imapTools.validateSequnce(range)) {
+        if (!imapTools.validateSequence(range)) {
             return callback(new Error('Invalid sequence set for UID STORE'));
         }
 
diff --git a/imap-core/lib/imap-tools.js b/imap-core/lib/imap-tools.js
index 017b9070..5eb5daf9 100644
--- a/imap-core/lib/imap-tools.js
+++ b/imap-core/lib/imap-tools.js
@@ -201,7 +201,7 @@ module.exports.searchMapping = {
  * @param {range} range Sequence range, eg "1,2,3:7"
  * @returns {Boolean} True if the string looks like a sequence range
  */
-module.exports.validateSequnce = function (range) {
+module.exports.validateSequence = function (range) {
     return !!(range.length && /^(\d+|\*)(:\d+|:\*)?(,(\d+|\*)(:\d+|:\*)?)*$/.test(range));
 };