diff --git a/src/tools/clangbackend/ipcsource/codecompleter.cpp b/src/tools/clangbackend/ipcsource/codecompleter.cpp
index e8f88b4c1d0..149277c53d3 100644
--- a/src/tools/clangbackend/ipcsource/codecompleter.cpp
+++ b/src/tools/clangbackend/ipcsource/codecompleter.cpp
@@ -49,6 +49,8 @@ CodeCompleter::CodeCompleter(TranslationUnit translationUnit)
 
 QVector<CodeCompletion> CodeCompleter::complete(uint line, uint column)
 {
+    translationUnit.reparse();
+
     ClangCodeCompleteResults completeResults(clang_codeCompleteAt(translationUnit.cxTranslationUnit(),
                                                                   translationUnit.filePath().constData(),
                                                                   line,
diff --git a/src/tools/clangbackend/ipcsource/translationunit.cpp b/src/tools/clangbackend/ipcsource/translationunit.cpp
index f74b555f383..bfbfb9ec744 100644
--- a/src/tools/clangbackend/ipcsource/translationunit.cpp
+++ b/src/tools/clangbackend/ipcsource/translationunit.cpp
@@ -96,6 +96,13 @@ void TranslationUnit::reset()
     d.reset();
 }
 
+void TranslationUnit::reparse()
+{
+    cxTranslationUnit();
+
+    reparseTranslationUnit();
+}
+
 CXIndex TranslationUnit::index() const
 {
     checkIfNull();
diff --git a/src/tools/clangbackend/ipcsource/translationunit.h b/src/tools/clangbackend/ipcsource/translationunit.h
index 75dd39e8614..803e5e9c27b 100644
--- a/src/tools/clangbackend/ipcsource/translationunit.h
+++ b/src/tools/clangbackend/ipcsource/translationunit.h
@@ -73,6 +73,7 @@ public:
     bool isNull() const;
 
     void reset();
+    void reparse();
 
     CXIndex index() const;
     CXTranslationUnit cxTranslationUnit() const;