diff --git a/libraries/test_utils/src/main/java/androidx/media3/test/utils/truth/SpannedSubject.java b/libraries/test_utils/src/main/java/androidx/media3/test/utils/truth/SpannedSubject.java
index 4b8d31e6e1..b76e914181 100644
--- a/libraries/test_utils/src/main/java/androidx/media3/test/utils/truth/SpannedSubject.java
+++ b/libraries/test_utils/src/main/java/androidx/media3/test/utils/truth/SpannedSubject.java
@@ -845,6 +845,8 @@ public final class SpannedSubject extends Subject {
 
   private static final Colored ALREADY_FAILED_COLORED = color -> ALREADY_FAILED_AND_FLAGS;
 
+  // incompatible parameter types for parameter 1 in lambda expression.
+  @SuppressWarnings("nullness:lambda.param.type.incompatible")
   private static Factory<ForegroundColorSpansSubject, List<ForegroundColorSpan>>
       foregroundColorSpans(Spanned actualSpanned) {
     return (FailureMetadata metadata, List<ForegroundColorSpan> spans) ->
@@ -884,6 +886,8 @@ public final class SpannedSubject extends Subject {
     }
   }
 
+  // incompatible parameter types for parameter 1 in lambda expression.
+  @SuppressWarnings("nullness:lambda.param.type.incompatible")
   private static Factory<BackgroundColorSpansSubject, List<BackgroundColorSpan>>
       backgroundColorSpans(Spanned actualSpanned) {
     return (FailureMetadata metadata, List<BackgroundColorSpan> spans) ->
@@ -987,6 +991,8 @@ public final class SpannedSubject extends Subject {
   private static final AbsoluteSized ALREADY_FAILED_ABSOLUTE_SIZED =
       size -> ALREADY_FAILED_AND_FLAGS;
 
+  // incompatible parameter types for parameter 1 in lambda expression.
+  @SuppressWarnings("nullness:lambda.param.type.incompatible")
   private static Factory<AbsoluteSizeSpansSubject, List<AbsoluteSizeSpan>> absoluteSizeSpans(
       Spanned actualSpanned) {
     return (FailureMetadata metadata, List<AbsoluteSizeSpan> spans) ->
@@ -1091,6 +1097,8 @@ public final class SpannedSubject extends Subject {
   private static final RubyText ALREADY_FAILED_WITH_TEXT =
       (text, position) -> ALREADY_FAILED_AND_FLAGS;
 
+  // incompatible parameter types for parameter 1 in lambda expression.
+  @SuppressWarnings("nullness:lambda.param.type.incompatible")
   private static Factory<RubySpansSubject, List<RubySpan>> rubySpans(Spanned actualSpanned) {
     return (FailureMetadata metadata, List<RubySpan> spans) ->
         new RubySpansSubject(metadata, spans, actualSpanned);