diff --git a/jdk/src/java.base/share/classes/java/lang/module/ModuleInfo.java b/jdk/src/java.base/share/classes/java/lang/module/ModuleInfo.java
index efc8c37b8a2..7bf9342ca88 100644
--- a/jdk/src/java.base/share/classes/java/lang/module/ModuleInfo.java
+++ b/jdk/src/java.base/share/classes/java/lang/module/ModuleInfo.java
@@ -154,7 +154,7 @@ final class ModuleInfo {
         int minor_version = in.readUnsignedShort();
         int major_version = in.readUnsignedShort();
         if (major_version < 53) {
-            // throw invalidModuleDescriptor"Must be >= 53.0");
+            throw invalidModuleDescriptor("Must be >= 53.0");
         }
 
         ConstantPool cpool = new ConstantPool(in);
diff --git a/jdk/src/java.base/share/classes/jdk/internal/module/ModuleInfoWriter.java b/jdk/src/java.base/share/classes/jdk/internal/module/ModuleInfoWriter.java
index 1fb433b9f7c..c86416e1dab 100644
--- a/jdk/src/java.base/share/classes/jdk/internal/module/ModuleInfoWriter.java
+++ b/jdk/src/java.base/share/classes/jdk/internal/module/ModuleInfoWriter.java
@@ -54,7 +54,7 @@ public final class ModuleInfoWriter {
         ClassWriter cw = new ClassWriter(0);
 
         String name = md.name().replace('.', '/') + "/module-info";
-        cw.visit(Opcodes.V1_8, ACC_MODULE, name, null, null, null);
+        cw.visit(Opcodes.V1_9, ACC_MODULE, name, null, null, null);
 
         cw.visitAttribute(new ModuleAttribute(md));
         cw.visitAttribute(new ConcealedPackagesAttribute(md.conceals()));