diff --git a/src/tools/clangbackend/ipcsource/translationunit.cpp b/src/tools/clangbackend/ipcsource/translationunit.cpp
index 8e0fdf86264..6501be75e61 100644
--- a/src/tools/clangbackend/ipcsource/translationunit.cpp
+++ b/src/tools/clangbackend/ipcsource/translationunit.cpp
@@ -257,9 +257,6 @@ void TranslationUnit::createTranslationUnitIfNeeded() const
 
         updateIncludeFilePaths();
 
-        // We need to reparse to create the precompiled preamble, which will speed up further calls,
-        // e.g. clang_codeCompleteAt() dramatically.
-        reparseTranslationUnit();
 
         updateLastProjectPartChangeTimePoint();
     }