diff --git a/components/synedit/syneditmarkup.pp b/components/synedit/syneditmarkup.pp
index 8106ee7d78..af95475260 100644
--- a/components/synedit/syneditmarkup.pp
+++ b/components/synedit/syneditmarkup.pp
@@ -1,3 +1,24 @@
+{-------------------------------------------------------------------------------
+The contents of this file are subject to the Mozilla Public License
+Version 1.1 (the "License"); you may not use this file except in compliance
+with the License. You may obtain a copy of the License at
+http://www.mozilla.org/MPL/
+
+Software distributed under the License is distributed on an "AS IS" basis,
+WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
+the specific language governing rights and limitations under the License.
+
+Alternatively, the contents of this file may be used under the terms of the
+GNU General Public License Version 2 or later (the "GPL"), in which case
+the provisions of the GPL are applicable instead of those above.
+If you wish to allow use of your version of this file only under the terms
+of the GPL and not to allow others to use your version of this file
+under the MPL, indicate your decision by deleting the provisions above and
+replace them with the notice and other provisions required by the GPL.
+If you do not delete the provisions above, a recipient may use your version
+of this file under either the MPL or the GPL.
+
+-------------------------------------------------------------------------------}
 unit SynEditMarkup;
 
 {$mode objfpc}{$H+}
diff --git a/components/synedit/syneditmarkupbracket.pp b/components/synedit/syneditmarkupbracket.pp
index 55177c7e0e..627e06d0bc 100644
--- a/components/synedit/syneditmarkupbracket.pp
+++ b/components/synedit/syneditmarkupbracket.pp
@@ -1,3 +1,24 @@
+{-------------------------------------------------------------------------------
+The contents of this file are subject to the Mozilla Public License
+Version 1.1 (the "License"); you may not use this file except in compliance
+with the License. You may obtain a copy of the License at
+http://www.mozilla.org/MPL/
+
+Software distributed under the License is distributed on an "AS IS" basis,
+WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
+the specific language governing rights and limitations under the License.
+
+Alternatively, the contents of this file may be used under the terms of the
+GNU General Public License Version 2 or later (the "GPL"), in which case
+the provisions of the GPL are applicable instead of those above.
+If you wish to allow use of your version of this file only under the terms
+of the GPL and not to allow others to use your version of this file
+under the MPL, indicate your decision by deleting the provisions above and
+replace them with the notice and other provisions required by the GPL.
+If you do not delete the provisions above, a recipient may use your version
+of this file under either the MPL or the GPL.
+
+-------------------------------------------------------------------------------}
 unit SynEditMarkupBracket;
 
 {$mode objfpc}{$H+}
diff --git a/components/synedit/syneditmarkuphighall.pp b/components/synedit/syneditmarkuphighall.pp
index 7245324c68..3139b1e798 100644
--- a/components/synedit/syneditmarkuphighall.pp
+++ b/components/synedit/syneditmarkuphighall.pp
@@ -1,3 +1,24 @@
+{-------------------------------------------------------------------------------
+The contents of this file are subject to the Mozilla Public License
+Version 1.1 (the "License"); you may not use this file except in compliance
+with the License. You may obtain a copy of the License at
+http://www.mozilla.org/MPL/
+
+Software distributed under the License is distributed on an "AS IS" basis,
+WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
+the specific language governing rights and limitations under the License.
+
+Alternatively, the contents of this file may be used under the terms of the
+GNU General Public License Version 2 or later (the "GPL"), in which case
+the provisions of the GPL are applicable instead of those above.
+If you wish to allow use of your version of this file only under the terms
+of the GPL and not to allow others to use your version of this file
+under the MPL, indicate your decision by deleting the provisions above and
+replace them with the notice and other provisions required by the GPL.
+If you do not delete the provisions above, a recipient may use your version
+of this file under either the MPL or the GPL.
+
+-------------------------------------------------------------------------------}
 unit SynEditMarkupHighAll;
 
 {$mode objfpc}{$H+}