diff --git a/modules/actions/join.js b/modules/actions/join.js
index 3515a243b..9d85dfe6f 100644
--- a/modules/actions/join.js
+++ b/modules/actions/join.js
@@ -39,7 +39,7 @@ export function actionJoin(ids) {
         });
 
         // Prefer to keep an existing way.
-        // if there are mulitple existing ways, keep the oldest one
+        // if there are multiple existing ways, keep the oldest one
         // the oldest way is determined by the ID of the way
         const survivorID = (
             ways
diff --git a/modules/behavior/draw_way.js b/modules/behavior/draw_way.js
index 0a7645d62..37a049d90 100644
--- a/modules/behavior/draw_way.js
+++ b/modules/behavior/draw_way.js
@@ -478,7 +478,7 @@ export function behaviorDrawWay(context, wayID, mode, startGraph) {
             const indexOfSecondLast = way.nodes.indexOf(secondLastNodeId);
 
             // for a closed way, the first/last node is the same so it appears twice in the array,
-            // but indexOf always finds the first occurance. This is only an issue when following a way
+            // but indexOf always finds the first occurrence. This is only an issue when following a way
             // in descending order
             const isDescendingPastZero = indexOfLast === way.nodes.length - 2 && indexOfSecondLast === 0;
 
diff --git a/modules/core/validator.js b/modules/core/validator.js
index 2e899d9b4..0fec44f08 100644
--- a/modules/core/validator.js
+++ b/modules/core/validator.js
@@ -871,7 +871,7 @@ function validationCache(which) {
           const issue = cache.issuesByIssueID[issueID];
           if (issue) {
             (issue.entityIds || []).forEach(relatedID => result.add(relatedID));
-          } else {  // shouldnt happen, clean up
+          } else {  // shouldn't happen, clean up
             delete cache.issuesByIssueID[issueID];
           }
         });