diff --git a/Doxyfile.in b/Doxyfile.in
index 4dda7b6b..cbc5c840 100644
--- a/Doxyfile.in
+++ b/Doxyfile.in
@@ -1414,7 +1414,7 @@ QHP_NAMESPACE          = PIP
 # The default value is: doc.
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
-QHP_VIRTUAL_FOLDER     = doc
+QHP_VIRTUAL_FOLDER     = PIP
 
 # If the QHP_CUST_FILTER_NAME tag is set, it specifies the name of a custom
 # filter to add. For more information please see Qt Help Project / Custom
@@ -1428,14 +1428,14 @@ QHP_CUST_FILTER_NAME   = PIP
 # Filters (see: http://doc.qt.io/qt-4.8/qthelpproject.html#custom-filters).
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
-QHP_CUST_FILTER_ATTRS  = "PIP 1.7.1"
+QHP_CUST_FILTER_ATTRS  = "PIP"
 
 # The QHP_SECT_FILTER_ATTRS tag specifies the list of the attributes this
 # project's filter section matches. Qt Help Project / Filter Attributes (see:
 # http://doc.qt.io/qt-4.8/qthelpproject.html#filter-attributes).
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
-QHP_SECT_FILTER_ATTRS  = "PIP 1.7.1"
+QHP_SECT_FILTER_ATTRS  = "PIP"
 
 # The QHG_LOCATION tag can be used to specify the location of Qt's
 # qhelpgenerator. If non-empty doxygen will try to run qhelpgenerator on the