1 files changed, 4 insertions, 4 deletions
diff --git a/spark-fabric/src/main/java/me/lucko/spark/fabric/FabricClassSourceLookup.java b/spark-fabric/src/main/java/me/lucko/spark/fabric/FabricClassSourceLookup.java
index 51834fc..ef22d9c 100644
--- a/spark-fabric/src/main/java/me/lucko/spark/fabric/FabricClassSourceLookup.java
+++ b/spark-fabric/src/main/java/me/lucko/spark/fabric/FabricClassSourceLookup.java
@@ -31,7 +31,6 @@ import me.lucko.spark.fabric.smap.SourceMapProvider;
 import net.fabricmc.loader.api.FabricLoader;
 import net.fabricmc.loader.api.ModContainer;
 
-import org.checkerframework.checker.nullness.qual.Nullable;
 import org.objectweb.asm.Type;
 import org.spongepowered.asm.mixin.FabricUtil;
 import org.spongepowered.asm.mixin.extensibility.IMixinConfig;
@@ -73,7 +72,7 @@ public class FabricClassSourceLookup extends ClassSourceLookup.ByCodeSource {
     }
 
     @Override
-    public @Nullable String identify(MethodCall methodCall) throws Exception {
+    public String identify(MethodCall methodCall) throws Exception {
         String className = methodCall.getClassName();
         String methodName = methodCall.getMethodName();
         String methodDesc = methodCall.getMethodDescriptor();
@@ -99,7 +98,7 @@ public class FabricClassSourceLookup extends ClassSourceLookup.ByCodeSource {
     }
 
     @Override
-    public @Nullable String identify(MethodCallByLine methodCall) throws Exception {
+    public String identify(MethodCallByLine methodCall) throws Exception {
         String className = methodCall.getClassName();
         String methodName = methodCall.getMethodName();
         int lineNumber = methodCall.getLineNumber();
@@ -143,7 +142,8 @@ public class FabricClassSourceLookup extends ClassSourceLookup.ByCodeSource {
     private static String modIdFromMixinClass(String mixinClassName) {
         for (Config config : MixinUtils.getMixinConfigs().values()) {
             IMixinConfig mixinConfig = config.getConfig();
-            if (mixinClassName.startsWith(mixinConfig.getMixinPackage())) {
+            String mixinPackage = mixinConfig.getMixinPackage();
+            if (!mixinPackage.isEmpty() && mixinClassName.startsWith(mixinPackage)) {
                 return mixinConfig.getDecoration(FabricUtil.KEY_MOD_ID);
             }
         }