diff --git a/extensions/okhttp/build.gradle b/extensions/okhttp/build.gradle
index 3af38397a8..bde4e127df 100644
--- a/extensions/okhttp/build.gradle
+++ b/extensions/okhttp/build.gradle
@@ -39,8 +39,8 @@ dependencies {
     testImplementation 'org.robolectric:robolectric:' + robolectricVersion
     // Do not update to 3.13.X or later until minSdkVersion is increased to 21:
     // https://cashapp.github.io/2019-02-05/okhttp-3-13-requires-android-5
-    // Since OkHttp is distributed as a jar rather than an aar, Gradle wont stop
-    // us from making this mistake!
+    // Since OkHttp is distributed as a jar rather than an aar, Gradle won't
+    // stop us from making this mistake!
     api 'com.squareup.okhttp3:okhttp:3.12.5'
 }
 
diff --git a/library/core/src/main/java/com/google/android/exoplayer2/scheduler/Requirements.java b/library/core/src/main/java/com/google/android/exoplayer2/scheduler/Requirements.java
index 87ea60bf73..8919a26720 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/scheduler/Requirements.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/scheduler/Requirements.java
@@ -165,7 +165,7 @@ public final class Requirements implements Parcelable {
   private static boolean isInternetConnectivityValidated(ConnectivityManager connectivityManager) {
     // It's possible to query NetworkCapabilities from API level 23, but RequirementsWatcher only
     // fires an event to update its Requirements when NetworkCapabilities change from API level 24.
-    // Since Requirements wont be updated, we assume connectivity is validated on API level 23.
+    // Since Requirements won't be updated, we assume connectivity is validated on API level 23.
     if (Util.SDK_INT < 24) {
       return true;
     }
diff --git a/library/core/src/test/java/com/google/android/exoplayer2/upstream/cache/SimpleCacheTest.java b/library/core/src/test/java/com/google/android/exoplayer2/upstream/cache/SimpleCacheTest.java
index a8dbfe3b42..4d9a936c4e 100644
--- a/library/core/src/test/java/com/google/android/exoplayer2/upstream/cache/SimpleCacheTest.java
+++ b/library/core/src/test/java/com/google/android/exoplayer2/upstream/cache/SimpleCacheTest.java
@@ -204,7 +204,7 @@ public class SimpleCacheTest {
     simpleCache.releaseHoleSpan(cacheSpan2);
     simpleCache.removeSpan(simpleCache.getCachedSpans(KEY_2).first());
 
-    // Don't release the cache. This means the index file wont have been written to disk after the
+    // Don't release the cache. This means the index file won't have been written to disk after the
     // data for KEY_2 was removed. Move the cache instead, so we can reload it without failing the
     // folder locking check.
     File cacheDir2 =