diff --git a/src/plugins/cppeditor/cpphoverhandler.cpp b/src/plugins/cppeditor/cpphoverhandler.cpp
index 5524643c05068317f0574da6f67c2fd1c4e7e1a4..5c84e8684120b47452389492ae8b1cd1a85ba89d 100644
--- a/src/plugins/cppeditor/cpphoverhandler.cpp
+++ b/src/plugins/cppeditor/cpphoverhandler.cpp
@@ -232,10 +232,10 @@ void CppHoverHandler::identifyMatch(TextEditor::ITextEditor *editor, int pos)
 }
 
 bool CppHoverHandler::matchDiagnosticMessage(const CPlusPlus::Document::Ptr &document,
-                                             const int line)
+                                             unsigned line)
 {
     foreach (const Document::DiagnosticMessage &m, document->diagnosticMessages()) {
-        if (m.line() == unsigned(line)) {
+        if (m.line() == line) {
             m_toolTip = m.text();
             return true;
         }
@@ -243,10 +243,10 @@ bool CppHoverHandler::matchDiagnosticMessage(const CPlusPlus::Document::Ptr &doc
     return false;
 }
 
-bool CppHoverHandler::matchIncludeFile(const CPlusPlus::Document::Ptr &document, const int line)
+bool CppHoverHandler::matchIncludeFile(const CPlusPlus::Document::Ptr &document, unsigned line)
 {
     foreach (const Document::Include &includeFile, document->includes()) {
-        if (includeFile.line() == unsigned(line)) {
+        if (includeFile.line() == line) {
             m_toolTip = QDir::toNativeSeparators(includeFile.fileName());
             const QString &fileName = QFileInfo(includeFile.fileName()).fileName();
             m_helpCandidates.append(HelpCandidate(fileName, fileName, HelpCandidate::Include));
@@ -256,11 +256,11 @@ bool CppHoverHandler::matchIncludeFile(const CPlusPlus::Document::Ptr &document,
     return false;
 }
 
-bool CppHoverHandler::matchMacroInUse(const CPlusPlus::Document::Ptr &document, const int pos)
+bool CppHoverHandler::matchMacroInUse(const CPlusPlus::Document::Ptr &document, unsigned pos)
 {
     foreach (const Document::MacroUse &use, document->macroUses()) {
         if (use.contains(pos)) {
-            const int begin = use.begin();
+            const unsigned begin = use.begin();
             const QString &name = use.macro().name();
             if (pos < begin + name.length()) {
                 m_toolTip = use.macro().toString();
diff --git a/src/plugins/cppeditor/cpphoverhandler.h b/src/plugins/cppeditor/cpphoverhandler.h
index 3ba7177c15aa647e62588dcb999bd9d62a08e2f9..84c58733d484e314f788ab988aa943a3da463c7f 100644
--- a/src/plugins/cppeditor/cpphoverhandler.h
+++ b/src/plugins/cppeditor/cpphoverhandler.h
@@ -97,9 +97,9 @@ private:
 
     void resetMatchings();
     void identifyMatch(TextEditor::ITextEditor *editor, int pos);
-    bool matchDiagnosticMessage(const CPlusPlus::Document::Ptr &document, const int line);
-    bool matchIncludeFile(const CPlusPlus::Document::Ptr &document, const int line);
-    bool matchMacroInUse(const CPlusPlus::Document::Ptr &document, const int pos);
+    bool matchDiagnosticMessage(const CPlusPlus::Document::Ptr &document, unsigned line);
+    bool matchIncludeFile(const CPlusPlus::Document::Ptr &document, unsigned line);
+    bool matchMacroInUse(const CPlusPlus::Document::Ptr &document, unsigned pos);
     void handleLookupItemMatch(const CPlusPlus::LookupItem &lookupItem,
                                const bool assignTooltip);