diff --git a/library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImplInternal.java b/library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImplInternal.java
index 38b9648162..65dea43d08 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImplInternal.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImplInternal.java
@@ -1315,7 +1315,7 @@ import java.io.IOException;
           repeatMode);
     }
 
-    if (newLoadingPeriodIndex >= timeline.getPeriodCount()) {
+    if (newLoadingPeriodIndex == C.INDEX_UNSET) {
       // The next period is not available yet.
       mediaSource.maybeThrowSourceInfoRefreshError();
       return;