diff --git a/src/main/java/cpw/mods/jarhandling/impl/Jar.java b/src/main/java/cpw/mods/jarhandling/impl/Jar.java
index 06c8019..469dbb3 100644
--- a/src/main/java/cpw/mods/jarhandling/impl/Jar.java
+++ b/src/main/java/cpw/mods/jarhandling/impl/Jar.java
@@ -357,7 +357,7 @@ private Set<String> gatherPackages() {
         var ret = new HashSet<String>();
         for (var file : files) {
             int idx = file.lastIndexOf('/');
-            if (!file.endsWith(".class") || idx == -1)
+            if (idx == -1 || !file.endsWith(".class"))
                 continue;
             ret.add(file.substring(0, idx).replace('/', '.'));
         }
diff --git a/src/main/java/net/minecraftforge/securemodules/SecureModuleFinder.java b/src/main/java/net/minecraftforge/securemodules/SecureModuleFinder.java
index 9ecc0e2..804910e 100644
--- a/src/main/java/net/minecraftforge/securemodules/SecureModuleFinder.java
+++ b/src/main/java/net/minecraftforge/securemodules/SecureModuleFinder.java
@@ -24,7 +24,7 @@
 public class SecureModuleFinder implements ModuleFinder {
     private final Map<String, ModuleReference> references = new HashMap<>();
 
-    protected SecureModuleFinder(final SecureJar... jars) {
+    protected SecureModuleFinder(final Iterable<SecureJar> jars) {
         for (var jar : jars) {
             var data = jar.moduleDataProvider();
             if (references.containsKey(data.name()))
@@ -34,6 +34,10 @@ protected SecureModuleFinder(final SecureJar... jars) {
         }
     }
 
+    protected SecureModuleFinder(final SecureJar... jars) {
+        this(Arrays.asList(jars));
+    }
+
     @Override
     public Optional<ModuleReference> find(final String name) {
         return Optional.ofNullable(references.get(name));
@@ -48,6 +52,10 @@ public static SecureModuleFinder of(SecureJar... jars) {
         return new SecureModuleFinder(jars);
     }
 
+    public static SecureModuleFinder of(Iterable<SecureJar> jars) {
+        return new SecureModuleFinder(jars);
+    }
+
     private static class Reference extends SecureModuleReference {
         private final SecureJar.ModuleDataProvider jar;
         private final Manifest manifest;