diff --git a/src/main/java/org/spongepowered/asm/util/asm/MixinVerifier.java b/src/main/java/org/spongepowered/asm/util/asm/MixinVerifier.java
index 8519887b7..e8529c30b 100644
--- a/src/main/java/org/spongepowered/asm/util/asm/MixinVerifier.java
+++ b/src/main/java/org/spongepowered/asm/util/asm/MixinVerifier.java
@@ -101,6 +101,11 @@ protected boolean isAssignableFrom(final Type type, final Type other) {
         if (typeInfo.isInterface()) {
             typeInfo = ClassInfo.forName("java/lang/Object");
         }
-        return ClassInfo.forType(other, TypeLookup.ELEMENT_TYPE).hasSuperClass(typeInfo);
+
+        ClassInfo otherType = ClassInfo.forType(other, TypeLookup.ELEMENT_TYPE);
+        if (otherType != null)
+            return otherType.hasSuperClass(typeInfo);
+
+        return false;
     }
 }