diff --git a/src/org/jetbrains/java/decompiler/main/ClassWriter.java b/src/org/jetbrains/java/decompiler/main/ClassWriter.java
index 3f111a6..2d57c02 100644
--- a/src/org/jetbrains/java/decompiler/main/ClassWriter.java
+++ b/src/org/jetbrains/java/decompiler/main/ClassWriter.java
@@ -308,39 +308,45 @@ public class ClassWriter {
     List<StructModuleAttribute.RequiresEntry> requiresEntries = moduleAttribute.requires;
     if (!requiresEntries.isEmpty()) {
       for (StructModuleAttribute.RequiresEntry requires : requiresEntries) {
-        buffer.appendIndent(1).append("requires ").append(requires.moduleName.replace('/', '.')).append(';').appendLineSeparator();
+        if (!isGenerated(requires.flags)) {
+          buffer.appendIndent(1).append("requires ").append(requires.moduleName.replace('/', '.')).append(';').appendLineSeparator();
+          newLineNeeded = true;
+        }
       }
-      newLineNeeded = true;
     }
 
     List<StructModuleAttribute.ExportsEntry> exportsEntries = moduleAttribute.exports;
     if (!exportsEntries.isEmpty()) {
       if (newLineNeeded) buffer.appendLineSeparator();
       for (StructModuleAttribute.ExportsEntry exports : exportsEntries) {
-        buffer.appendIndent(1).append("exports ").append(exports.packageName.replace('/', '.'));
-        List<String> exportToModules = exports.exportToModules;
-        if (exportToModules.size() > 0) {
-          buffer.append(" to").appendLineSeparator();
-          appendFQClassNames(buffer, exportToModules);
+        if (!isGenerated(exports.flags)) {
+          buffer.appendIndent(1).append("exports ").append(exports.packageName.replace('/', '.'));
+          List<String> exportToModules = exports.exportToModules;
+          if (exportToModules.size() > 0) {
+            buffer.append(" to").appendLineSeparator();
+            appendFQClassNames(buffer, exportToModules);
+          }
+          buffer.append(';').appendLineSeparator();
+          newLineNeeded = true;
         }
-        buffer.append(';').appendLineSeparator();
       }
-      newLineNeeded = true;
     }
 
     List<StructModuleAttribute.OpensEntry> opensEntries = moduleAttribute.opens;
     if (!opensEntries.isEmpty()) {
       if (newLineNeeded) buffer.appendLineSeparator();
       for (StructModuleAttribute.OpensEntry opens : opensEntries) {
-        buffer.appendIndent(1).append("opens ").append(opens.packageName.replace('/', '.'));
-        List<String> opensToModules = opens.opensToModules;
-        if (opensToModules.size() > 0) {
-          buffer.append(" to").appendLineSeparator();
-          appendFQClassNames(buffer, opensToModules);
+        if (!isGenerated(opens.flags)) {
+          buffer.appendIndent(1).append("opens ").append(opens.packageName.replace('/', '.'));
+          List<String> opensToModules = opens.opensToModules;
+          if (opensToModules.size() > 0) {
+            buffer.append(" to").appendLineSeparator();
+            appendFQClassNames(buffer, opensToModules);
+          }
+          buffer.append(';').appendLineSeparator();
+          newLineNeeded = true;
         }
-        buffer.append(';').appendLineSeparator();
       }
-      newLineNeeded = true;
     }
 
     List<String> usesEntries = moduleAttribute.uses;
@@ -363,6 +369,10 @@ public class ClassWriter {
     }
   }
 
+  private static boolean isGenerated(int flags) {
+    return (flags & (CodeConstants.ACC_SYNTHETIC | CodeConstants.ACC_MANDATED)) != 0;
+  }
+
   private static void addTracer(StructClass cls, StructMethod method, BytecodeMappingTracer tracer) {
     StructLineNumberTableAttribute table = method.getAttribute(StructGeneralAttribute.ATTRIBUTE_LINE_NUMBER_TABLE);
     tracer.setLineNumberTable(table);
@@ -1266,4 +1276,4 @@ public class ClassWriter {
       }
     }
   }
-}
+}
\ No newline at end of file
diff --git a/src/org/jetbrains/java/decompiler/struct/attr/StructModuleAttribute.java b/src/org/jetbrains/java/decompiler/struct/attr/StructModuleAttribute.java
index ba2005b..9fd6f89 100644
--- a/src/org/jetbrains/java/decompiler/struct/attr/StructModuleAttribute.java
+++ b/src/org/jetbrains/java/decompiler/struct/attr/StructModuleAttribute.java
@@ -45,11 +45,11 @@ public class StructModuleAttribute extends StructGeneralAttribute {
     List<RequiresEntry> requires = new ArrayList<>(requiresCount);
     for (int i = 0; i < requiresCount; i++) {
       int moduleNameIndex = data.readUnsignedShort();
-      int moduleFlags = data.readUnsignedShort();
+      int requiresFlags = data.readUnsignedShort();
       int versionIndex = data.readUnsignedShort();
       String moduleName = pool.getPrimitiveConstant(moduleNameIndex).getString();
       String version = versionIndex == 0 ? null : pool.getPrimitiveConstant(versionIndex).getString();
-      requires.add(new RequiresEntry(moduleName, moduleFlags, version));
+      requires.add(new RequiresEntry(moduleName, requiresFlags, version));
     }
     return requires;
   }
@@ -119,36 +119,36 @@ public class StructModuleAttribute extends StructGeneralAttribute {
 
   public static final class RequiresEntry {
     public final String moduleName;
-    public final int moduleFlags;
+    public final int flags;
     public final String moduleVersion;
 
-    public RequiresEntry(String moduleName, int moduleFlags, String moduleVersion) {
+    public RequiresEntry(String moduleName, int flags, String moduleVersion) {
       this.moduleName = moduleName;
-      this.moduleFlags = moduleFlags;
+      this.flags = flags;
       this.moduleVersion = moduleVersion;
     }
   }
 
   public static final class ExportsEntry {
     public final String packageName;
-    public final int exportsFlags;
+    public final int flags;
     public final List<String> exportToModules;
 
-    public ExportsEntry(String packageName, int exportsFlags, List<String> exportToModules) {
+    public ExportsEntry(String packageName, int flags, List<String> exportToModules) {
       this.packageName = packageName;
-      this.exportsFlags = exportsFlags;
+      this.flags = flags;
       this.exportToModules = exportToModules;
     }
   }
 
   public static final class OpensEntry {
     public final String packageName;
-    public final int opensFlags;
+    public final int flags;
     public final List<String> opensToModules;
 
-    public OpensEntry(String packageName, int exportsFlags, List<String> exportToModules) {
+    public OpensEntry(String packageName, int flags, List<String> exportToModules) {
       this.packageName = packageName;
-      this.opensFlags = exportsFlags;
+      this.flags = flags;
       this.opensToModules = exportToModules;
     }
   }
@@ -162,4 +162,4 @@ public class StructModuleAttribute extends StructGeneralAttribute {
       this.implementationNames = implementationNames;
     }
   }
-}
+}
\ No newline at end of file
diff --git a/testData/classes/java9/module-info.class b/testData/classes/java9/module-info.class
index 0380f41..cc01403 100644
Binary files a/testData/classes/java9/module-info.class and b/testData/classes/java9/module-info.class differ
diff --git a/testData/results/module-info.dec b/testData/results/module-info.dec
index ec5e268..a2018a5 100644
--- a/testData/results/module-info.dec
+++ b/testData/results/module-info.dec
@@ -1,8 +1,8 @@
-import pkg.test1.TestModuleAnno;
+import sample.pkg1.TestModuleAnno;
 
 @TestModuleAnno("...")
 module sample.module {
-   requires java.base;
+   requires java.desktop;
 
    exports sample.pkg1;
    exports sample.pkg2 to
diff --git a/testData/src/java9/sample.module/TestModuleAnno.java b/testData/src/java9/sample.module/TestModuleAnno.java
index fb28aca..192ee2b 100644
--- a/testData/src/java9/sample.module/TestModuleAnno.java
+++ b/testData/src/java9/sample.module/TestModuleAnno.java
@@ -1,4 +1,4 @@
-package pkg.test1;
+package sample.pkg1;
 
 import java.lang.annotation.*;
 
diff --git a/testData/src/java9/sample.module/module-info.java b/testData/src/java9/sample.module/module-info.java
index f301ac5..9f42e18 100644
--- a/testData/src/java9/sample.module/module-info.java
+++ b/testData/src/java9/sample.module/module-info.java
@@ -1,8 +1,8 @@
-import pkg.test1.TestModuleAnno;
+import sample.pkg1.TestModuleAnno;
 
 @TestModuleAnno("...")
 module sample.module {
-  requires java.base;
+  requires java.desktop;
 
   uses java.util.spi.ToolProvider;