diff --git a/error-prone-contrib/src/main/java/tech/picnic/errorprone/refasterrules/ReactorRules.java b/error-prone-contrib/src/main/java/tech/picnic/errorprone/refasterrules/ReactorRules.java
index f4a64b61ee..b7017340bc 100644
--- a/error-prone-contrib/src/main/java/tech/picnic/errorprone/refasterrules/ReactorRules.java
+++ b/error-prone-contrib/src/main/java/tech/picnic/errorprone/refasterrules/ReactorRules.java
@@ -701,12 +701,12 @@ static final class MonoThen<T> {
   /** Prefer {@link Mono#singleOptional()} over more contrived alternatives. */
   // XXX: Consider creating a plugin that flags/discourages `Mono<Optional<T>>` method return
   // types, just as we discourage nullable `Boolean`s and `Optional`s.
-  static final class MonoCollectToOptional<T> {
+  static final class MonoSingleOptional<T> {
     @BeforeTemplate
     Mono<Optional<T>> before(Mono<T> mono) {
       return Refaster.anyOf(
-          mono.map(Optional::of).defaultIfEmpty(Optional.empty()),
-          mono.flux().collect(toOptional()));
+          mono.flux().collect(toOptional()),
+          mono.map(Optional::of).defaultIfEmpty(Optional.empty()));
     }
 
     @AfterTemplate
diff --git a/error-prone-contrib/src/test/resources/tech/picnic/errorprone/refasterrules/ReactorRulesTestInput.java b/error-prone-contrib/src/test/resources/tech/picnic/errorprone/refasterrules/ReactorRulesTestInput.java
index 719a73e4ff..02a3abad19 100644
--- a/error-prone-contrib/src/test/resources/tech/picnic/errorprone/refasterrules/ReactorRulesTestInput.java
+++ b/error-prone-contrib/src/test/resources/tech/picnic/errorprone/refasterrules/ReactorRulesTestInput.java
@@ -230,7 +230,7 @@ Mono<Void> testMonoThen() {
     return Mono.just("foo").flux().then();
   }
 
-  ImmutableSet<Mono<Optional<String>>> testMonoCollectToOptional() {
+  ImmutableSet<Mono<Optional<String>>> testMonoSingleOptional() {
     return ImmutableSet.of(
         Mono.just("foo").map(Optional::of).defaultIfEmpty(Optional.empty()),
         Mono.just("bar").flux().collect(toOptional()));
diff --git a/error-prone-contrib/src/test/resources/tech/picnic/errorprone/refasterrules/ReactorRulesTestOutput.java b/error-prone-contrib/src/test/resources/tech/picnic/errorprone/refasterrules/ReactorRulesTestOutput.java
index e95f3297a8..fee65bae6b 100644
--- a/error-prone-contrib/src/test/resources/tech/picnic/errorprone/refasterrules/ReactorRulesTestOutput.java
+++ b/error-prone-contrib/src/test/resources/tech/picnic/errorprone/refasterrules/ReactorRulesTestOutput.java
@@ -224,7 +224,7 @@ Mono<Void> testMonoThen() {
     return Mono.just("foo").then();
   }
 
-  ImmutableSet<Mono<Optional<String>>> testMonoCollectToOptional() {
+  ImmutableSet<Mono<Optional<String>>> testMonoSingleOptional() {
     return ImmutableSet.of(Mono.just("foo").singleOptional(), Mono.just("bar").singleOptional());
   }