diff --git a/src/tools/clangbackend/ipcsource/translationunit.cpp b/src/tools/clangbackend/ipcsource/translationunit.cpp
index c17ba94154f..5aa1a086d91 100644
--- a/src/tools/clangbackend/ipcsource/translationunit.cpp
+++ b/src/tools/clangbackend/ipcsource/translationunit.cpp
@@ -132,6 +132,7 @@ CXIndex TranslationUnit::index() const
 CXTranslationUnit TranslationUnit::cxTranslationUnit() const
 {
     checkIfNull();
+    checkIfFileExists();
     removeTranslationUnitIfProjectPartWasChanged();
     createTranslationUnitIfNeeded();
     reparseTranslationUnitIfFilesAreChanged();