diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 387fb247a8..b1115d5c39 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -15,6 +15,7 @@
         ([#7832](https://github.com/google/ExoPlayer/issues/7832)).
     *   Fix a bug that caused multiple ads in an ad pod to be skipped when one
         ad in the ad pod was skipped.
+    *   Fix passing an ads response to the `ImaAdsLoader` builder.
 
 ### 2.12.1 (2020-10-23) ###
 
diff --git a/extensions/ima/src/main/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoader.java b/extensions/ima/src/main/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoader.java
index 265ffe585b..65c8920971 100644
--- a/extensions/ima/src/main/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoader.java
+++ b/extensions/ima/src/main/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoader.java
@@ -705,7 +705,9 @@ public final class ImaAdsLoader
       if (adTagUri != null) {
         adTagDataSpec = new DataSpec(adTagUri);
       } else if (adsResponse != null) {
-        adTagDataSpec = new DataSpec(Util.getDataUriForString(adsResponse, "text/xml"));
+        adTagDataSpec =
+            new DataSpec(
+                Util.getDataUriForString(/* mimeType= */ "text/xml", /* data= */ adsResponse));
       } else {
         throw new IllegalStateException();
       }