diff --git a/src/tools/clangbackend/ipcsource/clangipcserver.cpp b/src/tools/clangbackend/ipcsource/clangipcserver.cpp
index a2c9afb4232..ef4f7f0d148 100644
--- a/src/tools/clangbackend/ipcsource/clangipcserver.cpp
+++ b/src/tools/clangbackend/ipcsource/clangipcserver.cpp
@@ -67,7 +67,7 @@ ClangIpcServer::ClangIpcServer()
                                                           client()->diagnosticsChanged(message);
                                                       });
 
-    sendDiagnosticsTimer.setInterval(1000);
+    sendDiagnosticsTimer.setInterval(300);
     QObject::connect(&sendDiagnosticsTimer,
                      &QTimer::timeout,
                      [this] () { translationUnits.sendChangedDiagnostics(); });