diff --git a/Doxyfile b/Doxyfile
index c255d51..5473876 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -985,7 +985,7 @@ TOC_EXPAND             = NO
 
 # If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and 
 # QHP_VIRTUAL_FOLDER are set, an additional index file will be generated 
-# that can be used as input for Qt's qhelpgenerator to generate a 
+# that can be used as input for Qt's qhelpgenerator to generate a
 # Qt Compressed Help (.qch) of the generated HTML documentation.
 
 GENERATE_QHP           = NO
@@ -998,25 +998,25 @@ QCH_FILE               =
 
 # The QHP_NAMESPACE tag specifies the namespace to use when generating 
 # Qt Help Project output. For more information please see 
-# http://doc.trolltech.com/qthelpproject.html#namespace
+# http://doc.qt.io/qt-5/qthelpproject.html#namespace
 
 QHP_NAMESPACE          = org.doxygen.Project
 
 # The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating 
 # Qt Help Project output. For more information please see 
-# http://doc.trolltech.com/qthelpproject.html#virtual-folders
+# http://doc.qt.io/qt-5/qthelpproject.html#virtual-folders
 
 QHP_VIRTUAL_FOLDER     = doc
 
 # If QHP_CUST_FILTER_NAME is set, it specifies the name of a custom filter to 
 # add. For more information please see 
-# http://doc.trolltech.com/qthelpproject.html#custom-filters
+# http://doc.qt.io/qt-5/qthelpproject.html#custom-filters
 
 QHP_CUST_FILTER_NAME   = 
 
 # The QHP_CUST_FILT_ATTRS tag specifies the list of the attributes of the 
 # custom filter to add. For more information please see 
-# <a href="http://doc.trolltech.com/qthelpproject.html#custom-filters"> 
+# <a href="http://doc.qt.io/qt-5/qthelpproject.html#custom-filters">
 # Qt Help Project / Custom Filters</a>.
 
 QHP_CUST_FILTER_ATTRS  = 
@@ -1024,13 +1024,13 @@ QHP_CUST_FILTER_ATTRS  =
 # The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this 
 # project's 
 # filter section matches. 
-# <a href="http://doc.trolltech.com/qthelpproject.html#filter-attributes"> 
+# <a href="http://doc.qt.io/qt-5/qthelpproject.html#filter-attributes">
 # Qt Help Project / Filter Attributes</a>.
 
 QHP_SECT_FILTER_ATTRS  = 
 
 # If the GENERATE_QHP tag is set to YES, the QHG_LOCATION tag can 
-# be used to specify the location of Qt's qhelpgenerator. 
+# be used to specify the location of Qt's qhelpgenerator.
 # If non-empty doxygen will try to run qhelpgenerator on the generated 
 # .qhp file.
 
@@ -1109,7 +1109,7 @@ FORMULA_TRANSPARENT    = YES
 # When the SEARCHENGINE tag is enabled doxygen will generate a search box 
 # for the HTML output. The underlying search engine uses javascript 
 # and DHTML and should work on any modern browser. Note that when using 
-# HTML help (GENERATE_HTMLHELP), Qt help (GENERATE_QHP), or docsets 
+# HTML help (GENERATE_HTMLHELP), Qt help (GENERATE_QHP), or docsets
 # (GENERATE_DOCSET) there is already a search function so this one should 
 # typically be disabled. For large projects the javascript based search engine 
 # can be slow, then enabling SERVER_BASED_SEARCH may provide a better solution.