diff --git a/src/main/java/net/fabricmc/loom/build/nesting/JarNester.java b/src/main/java/net/fabricmc/loom/build/nesting/JarNester.java
index 795223fa..10990203 100644
--- a/src/main/java/net/fabricmc/loom/build/nesting/JarNester.java
+++ b/src/main/java/net/fabricmc/loom/build/nesting/JarNester.java
@@ -107,7 +107,7 @@ public class JarNester {
 
 				for (File file : jars) {
 					String nestedJarPath = "META-INF/jars/" + file.getName();
-					Preconditions.checkArgument(ModUtils.isMod(file, platform) || ModUtils.isMod(file, ModPlatform.FABRIC), "Cannot nest none mod jar: " + file.getName());
+					Preconditions.checkArgument(ModUtils.isMod(file, platform), "Cannot nest none mod jar: " + file.getName());
 
 					for (JsonElement nestedJar : nestedJars) {
 						String nestedJarString = nestedJar.getAsString();
diff --git a/src/main/java/net/fabricmc/loom/util/ModUtils.java b/src/main/java/net/fabricmc/loom/util/ModUtils.java
index 44fff99f..c36ff887 100644
--- a/src/main/java/net/fabricmc/loom/util/ModUtils.java
+++ b/src/main/java/net/fabricmc/loom/util/ModUtils.java
@@ -48,7 +48,7 @@ public final class ModUtils {
 		if (platform == ModPlatform.FORGE) {
 			return ZipUtils.contains(input, "META-INF/mods.toml");
 		} else if (platform == ModPlatform.QUILT) {
-			return ZipUtils.contains(input, "quilt.mod.json");
+			return ZipUtils.contains(input, "quilt.mod.json") || isMod(input, ModPlatform.FABRIC);
 		}
 
 		return ZipUtils.contains(input, "fabric.mod.json");
@@ -73,18 +73,13 @@ public final class ModUtils {
 
 	public static boolean shouldRemapMod(Logger logger, File input, Object id, ModPlatform platform, String config) {
 		if (ZipUtils.contains(input.toPath(), "architectury.common.marker")) return true;
-		if (isMod(input, platform)) return true;
+		if (isMod(input.toPath(), platform)) return true;
 
 		if (platform == ModPlatform.FORGE) {
 			logger.lifecycle(":could not find forge mod in " + config + " but forcing: {}", id);
 			return true;
 		}
 
-		if (platform == ModPlatform.QUILT && isMod(input, ModPlatform.FABRIC)) {
-			logger.lifecycle(":found fabric mod on quilt {} in {}", id, config);
-			return true;
-		}
-
 		return false;
 	}
 }