diff --git a/headers/private/package/hpkg/ReaderImplBase.h b/headers/private/package/hpkg/ReaderImplBase.h
index 0ed343eb82..a8f6830b39 100644
--- a/headers/private/package/hpkg/ReaderImplBase.h
+++ b/headers/private/package/hpkg/ReaderImplBase.h
@@ -15,6 +15,7 @@
 
 #include <util/SinglyLinkedList.h>
 
+#include <package/hpkg/ErrorOutput.h>
 #include <package/hpkg/PackageAttributeValue.h>
 #include <package/hpkg/PackageContentHandler.h>
 #include <package/hpkg/PackageInfoAttributeValue.h>
diff --git a/src/kits/package/hpkg/PackageReaderImpl.cpp b/src/kits/package/hpkg/PackageReaderImpl.cpp
index 1446c31ae5..bc21926604 100644
--- a/src/kits/package/hpkg/PackageReaderImpl.cpp
+++ b/src/kits/package/hpkg/PackageReaderImpl.cpp
@@ -23,7 +23,6 @@
 #include <package/hpkg/HPKGDefsPrivate.h>
 
 #include <package/hpkg/DataOutput.h>
-#include <package/hpkg/ErrorOutput.h>
 #include <package/hpkg/PackageData.h>
 #include <package/hpkg/PackageEntry.h>
 #include <package/hpkg/PackageEntryAttribute.h>
diff --git a/src/kits/package/hpkg/ReaderImplBase.cpp b/src/kits/package/hpkg/ReaderImplBase.cpp
index 434d6efc1a..37e23d69b8 100644
--- a/src/kits/package/hpkg/ReaderImplBase.cpp
+++ b/src/kits/package/hpkg/ReaderImplBase.cpp
@@ -20,7 +20,6 @@
 #include <package/hpkg/HPKGDefsPrivate.h>
 
 #include <package/hpkg/DataOutput.h>
-#include <package/hpkg/ErrorOutput.h>
 #include <package/hpkg/PackageFileHeapReader.h>
 #include <package/hpkg/ZlibDecompressor.h>
 
diff --git a/src/kits/package/hpkg/RepositoryReaderImpl.cpp b/src/kits/package/hpkg/RepositoryReaderImpl.cpp
index 13f78a1471..0dc64679df 100644
--- a/src/kits/package/hpkg/RepositoryReaderImpl.cpp
+++ b/src/kits/package/hpkg/RepositoryReaderImpl.cpp
@@ -18,7 +18,6 @@
 #include <ByteOrder.h>
 #include <Message.h>
 
-#include <package/hpkg/ErrorOutput.h>
 #include <package/hpkg/HPKGDefsPrivate.h>
 #include <package/hpkg/PackageFileHeapReader.h>
 #include <package/hpkg/RepositoryContentHandler.h>