diff --git a/testing/src/main/java/dev/cel/testing/testrunner/DefaultResultMatcher.java b/testing/src/main/java/dev/cel/testing/testrunner/DefaultResultMatcher.java
index e332bc31c..8e3424cab 100644
--- a/testing/src/main/java/dev/cel/testing/testrunner/DefaultResultMatcher.java
+++ b/testing/src/main/java/dev/cel/testing/testrunner/DefaultResultMatcher.java
@@ -15,6 +15,7 @@
 
 import static com.google.common.truth.Truth.assertThat;
 import static com.google.common.truth.extensions.proto.ProtoTruth.assertThat;
+import static com.google.protobuf.LegacyUnredactedTextFormat.legacyUnredactedStringValueOf;
 import static dev.cel.testing.utils.ExprValueUtils.toExprValue;
 
 import dev.cel.expr.ExprValue;
@@ -69,7 +70,7 @@ public void match(ResultMatcherParams params, Cel cel) throws Exception {
         if (params.computedOutput().kind().equals(ComputedOutput.Kind.EXPR_VALUE)) {
           throw new AssertionError(
               "Evaluation was successful but no value was provided. Computed output: "
-                  + params.computedOutput().exprValue());
+                  + legacyUnredactedStringValueOf(params.computedOutput().exprValue()));
         }
         assertThat(params.computedOutput().error().toString())
             .contains(result.evalError().get(0).toString());
diff --git a/testing/src/test/java/dev/cel/testing/testrunner/DefaultResultMatcherTest.java b/testing/src/test/java/dev/cel/testing/testrunner/DefaultResultMatcherTest.java
index 640320168..41677c16c 100644
--- a/testing/src/test/java/dev/cel/testing/testrunner/DefaultResultMatcherTest.java
+++ b/testing/src/test/java/dev/cel/testing/testrunner/DefaultResultMatcherTest.java
@@ -123,7 +123,9 @@ public void match_expectedEvalErrorAndComputedExprValue_failure() throws Excepti
 
     assertThat(thrown)
         .hasMessageThat()
-        .contains("Evaluation was successful but no value was provided. Computed output:");
-    assertThat(thrown).hasMessageThat().contains("value {\n  int64_value: 3\n}");
+        .contains(
+            "Evaluation was successful but no value was provided. Computed output: value {\n"
+                + "  int64_value: 3\n"
+                + "}");
   }
 }