diff --git a/src/plugins/projectexplorer/buildsystem.cpp b/src/plugins/projectexplorer/buildsystem.cpp
index 6b98866135a..52c5b73f024 100644
--- a/src/plugins/projectexplorer/buildsystem.cpp
+++ b/src/plugins/projectexplorer/buildsystem.cpp
@@ -141,26 +141,11 @@ void BuildSystem::requestDelayedParse()
     requestParseHelper(1000);
 }
 
-void BuildSystem::requestParseWithCustomDelay(int delayInMs)
-{
-    requestParseHelper(delayInMs);
-}
-
 void BuildSystem::cancelDelayedParseRequest()
 {
     d->m_delayedParsingTimer.stop();
 }
 
-void BuildSystem::setParseDelay(int delayInMs)
-{
-    d->m_delayedParsingTimer.setInterval(delayInMs);
-}
-
-int BuildSystem::parseDelay() const
-{
-    return d->m_delayedParsingTimer.interval();
-}
-
 bool BuildSystem::isParsing() const
 {
     return d->m_isParsing;
diff --git a/src/plugins/projectexplorer/buildsystem.h b/src/plugins/projectexplorer/buildsystem.h
index f18cbbbea71..1681f28e5f3 100644
--- a/src/plugins/projectexplorer/buildsystem.h
+++ b/src/plugins/projectexplorer/buildsystem.h
@@ -56,10 +56,7 @@ public:
 
     void requestParse();
     void requestDelayedParse();
-    void requestParseWithCustomDelay(int delayInMs = 1000);
     void cancelDelayedParseRequest();
-    void setParseDelay(int delayInMs);
-    int parseDelay() const;
 
     bool isParsing() const;
     bool hasParsingData() const;
diff --git a/src/plugins/qmakeprojectmanager/qmakeproject.cpp b/src/plugins/qmakeprojectmanager/qmakeproject.cpp
index c8ae2c884e7..1f5e3ce5f98 100644
--- a/src/plugins/qmakeprojectmanager/qmakeproject.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakeproject.cpp
@@ -68,8 +68,6 @@ using namespace Utils;
 namespace QmakeProjectManager {
 namespace Internal {
 
-const int UPDATE_INTERVAL = 3000;
-
 static Q_LOGGING_CATEGORY(qmakeBuildSystemLog, "qtc.qmake.buildsystem", QtWarningMsg);
 
 #define TRACE(msg)                                                   \
@@ -204,8 +202,6 @@ QmakeBuildSystem::QmakeBuildSystem(QmakeBuildConfiguration *bc)
     , m_qmakeVfs(new QMakeVfs)
     , m_cppCodeModelUpdater(ProjectUpdaterFactory::createCppProjectUpdater())
 {
-    setParseDelay(0);
-
     m_rootProFile = std::make_unique<QmakeProFile>(this, projectFilePath());
 
     connect(BuildManager::instance(), &BuildManager::buildQueueFinished,
@@ -588,10 +584,11 @@ void QmakeBuildSystem::startAsyncTimer(QmakeProFile::AsyncUpdateDelay delay)
         return;
     }
 
-    const int interval = qMin(parseDelay(),
-                              delay == QmakeProFile::ParseLater ? UPDATE_INTERVAL : 0);
-    TRACE("interval: " << interval);
-    requestParseWithCustomDelay(interval);
+    TRACE("delay: " << delay);
+    switch (delay) {
+    case QmakeProFile::ParseNow: requestParse(); break;
+    case QmakeProFile::ParseLater: requestDelayedParse(); break;
+    }
 }
 
 void QmakeBuildSystem::incrementPendingEvaluateFutures()
@@ -666,7 +663,6 @@ bool QmakeBuildSystem::wasEvaluateCanceled()
 void QmakeBuildSystem::asyncUpdate()
 {
     TaskHub::clearTasks(ProjectExplorer::Constants::TASK_CATEGORY_BUILDSYSTEM);
-    setParseDelay(UPDATE_INTERVAL);
     TRACE("");
 
     if (m_invalidateQmakeVfsContents) {
@@ -945,7 +941,7 @@ void QmakeBuildSystem::activeTargetWasChanged(Target *t)
         return;
 
     m_invalidateQmakeVfsContents = true;
-    scheduleUpdateAll(QmakeProFile::ParseLater);
+    scheduleUpdateAllNowOrLater();
 }
 
 static void notifyChangedHelper(const FilePath &fileName, QmakeProFile *file)