diff --git a/src/plugins/qmldesigner/qmldesignerexternaldependencies.cpp b/src/plugins/qmldesigner/qmldesignerexternaldependencies.cpp
index 1bd58991657..a703f838663 100644
--- a/src/plugins/qmldesigner/qmldesignerexternaldependencies.cpp
+++ b/src/plugins/qmldesigner/qmldesignerexternaldependencies.cpp
@@ -236,9 +236,7 @@ QStringList ExternalDependencies::modulePaths() const
         if (auto path = qmlPath(target); !path.isEmpty())
             modulePaths.push_back(path);
 
-        for (const QString &modulePath : qmlBuildSystem->customImportPaths())
-            modulePaths.append(project->projectDirectory().pathAppended(modulePath).toString());
-
+        modulePaths.append(qmlBuildSystem->absoluteImportPaths());
         return modulePaths;
     }
 
@@ -250,10 +248,7 @@ QStringList ExternalDependencies::projectModulePaths() const
     auto [project, target, qmlBuildSystem] = activeProjectEntries();
 
     if (project && target && qmlBuildSystem) {
-        QStringList modulePaths;
-
-        for (const QString &modulePath : qmlBuildSystem->customImportPaths())
-            modulePaths.append(project->projectDirectory().pathAppended(modulePath).toString());
+        return qmlBuildSystem->absoluteImportPaths();
     }
 
     return {};
diff --git a/src/plugins/qmlprojectmanager/buildsystem/qmlbuildsystem.cpp b/src/plugins/qmlprojectmanager/buildsystem/qmlbuildsystem.cpp
index df52b599aa8..6b6ef441bfe 100644
--- a/src/plugins/qmlprojectmanager/buildsystem/qmlbuildsystem.cpp
+++ b/src/plugins/qmlprojectmanager/buildsystem/qmlbuildsystem.cpp
@@ -200,8 +200,8 @@ void QmlBuildSystem::refresh(RefreshOptions options)
             = modelManager->defaultProjectInfoForProject(project(),
                                                          project()->files(Project::HiddenRccFolders));
 
-    for (const QString &searchPath : customImportPaths()) {
-        projectInfo.importPaths.maybeInsert(projectDirectory().pathAppended(searchPath),
+    for (const QString &importPath : absoluteImportPaths()) {
+        projectInfo.importPaths.maybeInsert(Utils::FilePath::fromString(importPath),
                                             QmlJS::Dialect::Qml);
     }
 
@@ -649,6 +649,16 @@ QStringList QmlBuildSystem::importPaths() const
     return m_projectItem->importPaths();
 }
 
+QStringList QmlBuildSystem::absoluteImportPaths()
+{
+    return Utils::transform<QStringList>(m_projectItem->importPaths(), [&](const QString &importPath) {
+        Utils::FilePath filePath = Utils::FilePath::fromString(importPath);
+        if (!filePath.isAbsolutePath())
+            return (projectDirectory() / importPath).toString();
+        return projectDirectory().resolvePath(importPath).toString();
+    });
+}
+
 Utils::FilePaths QmlBuildSystem::files() const
 {
     return m_projectItem->files();
diff --git a/src/plugins/qmlprojectmanager/buildsystem/qmlbuildsystem.h b/src/plugins/qmlprojectmanager/buildsystem/qmlbuildsystem.h
index 2d689a19712..95b66871eb7 100644
--- a/src/plugins/qmlprojectmanager/buildsystem/qmlbuildsystem.h
+++ b/src/plugins/qmlprojectmanager/buildsystem/qmlbuildsystem.h
@@ -68,18 +68,24 @@ public:
     Utils::FilePath targetFile(const Utils::FilePath &sourceFile) const;
 
     Utils::EnvironmentItems environment() const;
+
+    QStringList importPaths() const;
+    QStringList absoluteImportPaths();
     QStringList customImportPaths() const;
     QStringList customFileSelectors() const;
+
     bool multilanguageSupport() const;
     QStringList supportedLanguages() const;
     void setSupportedLanguages(QStringList languages);
+
     QString primaryLanguage() const;
     void setPrimaryLanguage(QString language);
+
     bool forceFreeType() const;
     bool widgetApp() const;
+
     QStringList shaderToolArgs() const;
     QStringList shaderToolFiles() const;
-    QStringList importPaths() const;
     Utils::FilePaths files() const;
 
     QString versionQt() const;