diff --git a/src/plugins/valgrind/callgrindvisualisation.h b/src/plugins/valgrind/callgrindvisualisation.h
index cbb38ca6e51..f03b4775b58 100644
--- a/src/plugins/valgrind/callgrindvisualisation.h
+++ b/src/plugins/valgrind/callgrindvisualisation.h
@@ -29,7 +29,6 @@
 
 QT_BEGIN_NAMESPACE
 class QAbstractItemModel;
-class QModelIndex;
 QT_END_NAMESPACE
 
 namespace Valgrind {
diff --git a/src/plugins/valgrind/xmlprotocol/error.h b/src/plugins/valgrind/xmlprotocol/error.h
index f7b56f301f9..8a235348b1f 100644
--- a/src/plugins/valgrind/xmlprotocol/error.h
+++ b/src/plugins/valgrind/xmlprotocol/error.h
@@ -37,7 +37,6 @@ QT_END_NAMESPACE
 namespace Valgrind {
 namespace XmlProtocol {
 
-class Frame;
 class Stack;
 class Suppression;