diff --git a/src/main/java/net/fabricmc/loom/util/MixinRefmapHelper.java b/src/main/java/net/fabricmc/loom/util/MixinRefmapHelper.java
index 4f6bef1..1638e21 100644
--- a/src/main/java/net/fabricmc/loom/util/MixinRefmapHelper.java
+++ b/src/main/java/net/fabricmc/loom/util/MixinRefmapHelper.java
@@ -54,7 +54,7 @@ public final class MixinRefmapHelper {
         Set<String> mixinFilenames = findMixins(output, true);
 
         if (mixinFilenames.size() > 0) {
-            ZipUtil.transformEntries(
+            return ZipUtil.transformEntries(
                     output,
                     mixinFilenames.stream()
                             .map((f) -> new ZipEntryTransformerEntry(f, new StringZipEntryTransformer("UTF-8") {
@@ -66,8 +66,6 @@ public final class MixinRefmapHelper {
                                 }
                             })).toArray(ZipEntryTransformerEntry[]::new)
             );
-
-            return true;
         } else {
             return false;
         }
diff --git a/src/main/java/net/fabricmc/loom/util/ModRemapper.java b/src/main/java/net/fabricmc/loom/util/ModRemapper.java
index 461b7c5..a947828 100644
--- a/src/main/java/net/fabricmc/loom/util/ModRemapper.java
+++ b/src/main/java/net/fabricmc/loom/util/ModRemapper.java
@@ -100,7 +100,9 @@ public class ModRemapper {
 		}
 
 		if (extension.refmapName != null && extension.refmapName.length() > 0) {
-			MixinRefmapHelper.addRefmapName(extension.refmapName, modJarOutput);
+			if (MixinRefmapHelper.addRefmapName(extension.refmapName, modJarOutput)) {
+				project.getLogger().debug("Transformed mixin reference maps in output JAR!");
+			}
 		}
 
 		if (modJar.exists()) {