diff --git a/src/core/copysource.h b/src/core/copysource.h
index 5f46aa3..fe2cab4 100644
--- a/src/core/copysource.h
+++ b/src/core/copysource.h
@@ -23,7 +23,6 @@
 
 #include <qglobal.h>
 
-class QString;
 class CopyTarget;
 
 /** @brief Base class for something to copy from.
diff --git a/src/core/copytarget.h b/src/core/copytarget.h
index 6c2656c..d1cb807 100644
--- a/src/core/copytarget.h
+++ b/src/core/copytarget.h
@@ -23,7 +23,6 @@
 
 #include <qglobal.h>
 
-class QString;
 
 /** @brief Base class for something to copy to.
 
diff --git a/src/fs/ext2.h b/src/fs/ext2.h
index 22e96d9..7209eaa 100644
--- a/src/fs/ext2.h
+++ b/src/fs/ext2.h
@@ -25,7 +25,6 @@
 
 #include <qglobal.h>
 
-class Partition;
 class Report;
 
 class QString;
diff --git a/src/fs/fat16.h b/src/fs/fat16.h
index 8c0d734..fff923a 100644
--- a/src/fs/fat16.h
+++ b/src/fs/fat16.h
@@ -25,7 +25,6 @@
 
 #include <qglobal.h>
 
-class Partition;
 class Report;
 
 class QString;
diff --git a/src/fs/fat32.h b/src/fs/fat32.h
index 4e0b942..a03f685 100644
--- a/src/fs/fat32.h
+++ b/src/fs/fat32.h
@@ -25,7 +25,6 @@
 
 #include <qglobal.h>
 
-class Partition;
 class Report;
 
 class QString;
diff --git a/src/fs/hfs.h b/src/fs/hfs.h
index 8091430..332861e 100644
--- a/src/fs/hfs.h
+++ b/src/fs/hfs.h
@@ -25,7 +25,6 @@
 
 #include <qglobal.h>
 
-class Partition;
 class Report;
 
 class QString;
diff --git a/src/fs/hfsplus.h b/src/fs/hfsplus.h
index 6be74e3..8960129 100644
--- a/src/fs/hfsplus.h
+++ b/src/fs/hfsplus.h
@@ -25,7 +25,6 @@
 
 #include <qglobal.h>
 
-class Partition;
 class Report;
 
 class QString;
diff --git a/src/fs/jfs.h b/src/fs/jfs.h
index 176492c..a9cd33d 100644
--- a/src/fs/jfs.h
+++ b/src/fs/jfs.h
@@ -25,7 +25,6 @@
 
 #include <qglobal.h>
 
-class Partition;
 class Report;
 
 class QString;
diff --git a/src/fs/linuxswap.h b/src/fs/linuxswap.h
index 2f9df6c..385bd73 100644
--- a/src/fs/linuxswap.h
+++ b/src/fs/linuxswap.h
@@ -25,7 +25,6 @@
 
 #include <qglobal.h>
 
-class Partition;
 class Report;
 
 class QString;
diff --git a/src/fs/ntfs.h b/src/fs/ntfs.h
index ddbcb2f..400aae0 100644
--- a/src/fs/ntfs.h
+++ b/src/fs/ntfs.h
@@ -25,7 +25,6 @@
 
 #include <qglobal.h>
 
-class Partition;
 class Report;
 
 class QString;
diff --git a/src/fs/reiser4.h b/src/fs/reiser4.h
index 917b21c..a33b03f 100644
--- a/src/fs/reiser4.h
+++ b/src/fs/reiser4.h
@@ -25,7 +25,6 @@
 
 #include <qglobal.h>
 
-class Partition;
 class Report;
 
 class QString;
diff --git a/src/fs/reiserfs.h b/src/fs/reiserfs.h
index 57e6ef0..3d24729 100644
--- a/src/fs/reiserfs.h
+++ b/src/fs/reiserfs.h
@@ -27,7 +27,6 @@
 
 #include <qglobal.h>
 
-class Partition;
 class Report;
 
 class QString;
diff --git a/src/fs/unformatted.h b/src/fs/unformatted.h
index 8a00847..306b5bf 100644
--- a/src/fs/unformatted.h
+++ b/src/fs/unformatted.h
@@ -26,7 +26,6 @@
 #include <qglobal.h>
 
 class Report;
-class Partition;
 
 class QString;
 
diff --git a/src/fs/xfs.h b/src/fs/xfs.h
index 7624568..9f1a1c5 100644
--- a/src/fs/xfs.h
+++ b/src/fs/xfs.h
@@ -25,7 +25,6 @@
 
 #include <qglobal.h>
 
-class Partition;
 class Report;
 
 class QString;
diff --git a/src/gui/infopane.h b/src/gui/infopane.h
index 52677aa..0d5d1a5 100644
--- a/src/gui/infopane.h
+++ b/src/gui/infopane.h
@@ -26,7 +26,6 @@
 class Partition;
 class Device;
 
-class QLabel;
 class QGridLayout;
 class QString;
 
diff --git a/src/gui/mainwindow.h b/src/gui/mainwindow.h
index a3e8e83..69f45e6 100644
--- a/src/gui/mainwindow.h
+++ b/src/gui/mainwindow.h
@@ -32,18 +32,13 @@
 #include <kxmlguiwindow.h>
 
 class QWidget;
-class QAction;
-class KMenu;
 class QLabel;
 class PartWidget;
 class InfoPane;
 class QCloseEvent;
-class QShowEvent;
 class QEvent;
 class Device;
-class QPlainTextEdit;
 class ProgressDialog;
-class KAction;
 
 /** @brief The application's main window.
 
diff --git a/src/gui/partpropsdialog.h b/src/gui/partpropsdialog.h
index ff02df1..6d54a13 100644
--- a/src/gui/partpropsdialog.h
+++ b/src/gui/partpropsdialog.h
@@ -33,10 +33,7 @@ class PartPropsWidget;
 
 class QWidget;
 class QString;
-class QLabel;
 
-class KLineEdit;
-class KComboBox;
 
 /** @brief Show Partition properties.
 
diff --git a/src/gui/progressdialog.h b/src/gui/progressdialog.h
index 000c095..97e80ce 100644
--- a/src/gui/progressdialog.h
+++ b/src/gui/progressdialog.h
@@ -34,7 +34,6 @@ class ProgressDialogWidget;
 class ProgressDetailsWidget;
 class Report;
 
-class KTextEdit;
 
 class QTreeWidgetItem;
 class QCloseEvent;
diff --git a/src/gui/sizedialogbase.h b/src/gui/sizedialogbase.h
index 1200e2f..43b7fa5 100644
--- a/src/gui/sizedialogbase.h
+++ b/src/gui/sizedialogbase.h
@@ -31,9 +31,6 @@
 class Device;
 class Partition;
 class PartitionTable;
-class QSpinBox;
-class QLabel;
-class PartResizerWidget;
 class SizeDialogWidget;
 
 /** @brief Base class for all dialogs moving or resizing Partitions.