diff --git a/packages/minimongo/common.js b/packages/minimongo/common.js
index 509b0ba719..8697febc8b 100644
--- a/packages/minimongo/common.js
+++ b/packages/minimongo/common.js
@@ -308,7 +308,7 @@ const VALUE_OPERATORS = {
   },
   $near(operand, valueSelector, matcher, isRoot) {
     if (!isRoot)
-      throw Error("$near can't be inside another $ operator");
+      throw Error('$near can\'t be inside another $ operator');
 
     matcher._hasGeoQuery = true;
 
@@ -549,7 +549,7 @@ function distanceCoordinatePairs(a, b) {
 // for equality with that thing.
 export function equalityElementMatcher(elementSelector) {
   if (isOperatorObject(elementSelector))
-    throw Error("Can't create equalityValueSelector for operator object");
+    throw Error('Can\'t create equalityValueSelector for operator object');
 
   // Special-case: null and undefined are equal (if you got undefined in there
   // somewhere, or if you got it due to some branch being non-existent in the
diff --git a/packages/minimongo/local_collection.js b/packages/minimongo/local_collection.js
index b2e29abd85..b29ab44a5b 100644
--- a/packages/minimongo/local_collection.js
+++ b/packages/minimongo/local_collection.js
@@ -717,7 +717,7 @@ LocalCollection.wrapTransform = transform => {
 
     if (transformed.hasOwnProperty('_id')) {
       if (!EJSON.equals(transformed._id, id))
-        throw new Error("transformed document can't have different _id");
+        throw new Error('transformed document can\'t have different _id');
     } else {
       transformed._id = id;
     }