diff --git a/src/plugins/mesonprojectmanager/mesonprojectparser.cpp b/src/plugins/mesonprojectmanager/mesonprojectparser.cpp
index c84b5e4b3d6..528865f3d37 100644
--- a/src/plugins/mesonprojectmanager/mesonprojectparser.cpp
+++ b/src/plugins/mesonprojectmanager/mesonprojectparser.cpp
@@ -183,7 +183,7 @@ QList<ProjectExplorer::BuildTargetInfo> MesonProjectParser::appsTargets() const
         if (target.type == Target::Type::executable) {
             ProjectExplorer::BuildTargetInfo bti;
             bti.displayName = target.name;
-            bti.buildKey = Target::fullName(m_srcDir, target);
+            bti.buildKey = Target::fullName(m_buildDir, target);
             bti.displayNameUniquifier = bti.buildKey;
             bti.targetFilePath = Utils::FilePath::fromString(target.fileName.first());
             bti.workingDirectory = Utils::FilePath::fromString(target.fileName.first()).absolutePath();
@@ -237,7 +237,7 @@ void MesonProjectParser::update(const QFuture<MesonProjectParser::ParserData *>
     m_rootNode = std::move(parserData->rootNode);
     m_targetsNames.clear();
     for (const Target &target : m_parserResult.targets) {
-        m_targetsNames.push_back(Target::fullName(m_srcDir, target));
+        m_targetsNames.push_back(Target::fullName(m_buildDir, target));
     }
     addMissingTargets(m_targetsNames);
     m_targetsNames.sort();
@@ -253,7 +253,7 @@ ProjectExplorer::RawProjectPart MesonProjectParser::buildRawPart(
 {
     ProjectExplorer::RawProjectPart part;
     part.setDisplayName(target.name);
-    part.setBuildSystemTarget(Target::fullName(m_srcDir, target));
+    part.setBuildSystemTarget(Target::fullName(m_buildDir, target));
     part.setFiles(sources.sources + sources.generatedSources);
     auto flags = splitArgs(sources.parameters);
     part.setMacros(flags.macros);
diff --git a/src/plugins/mesonprojectmanager/target.h b/src/plugins/mesonprojectmanager/target.h
index 1efa3669490..b48c79e7c70 100644
--- a/src/plugins/mesonprojectmanager/target.h
+++ b/src/plugins/mesonprojectmanager/target.h
@@ -60,15 +60,17 @@ struct Target
     const std::optional<QString> subproject;
     const SourceGroupList sources;
 
-    static inline QString fullName(const Utils::FilePath &srcDir, const Target &target)
+    static inline QString fullName(const Utils::FilePath &buildDir, const Target &target)
     {
         using namespace Utils;
-        if (FilePath::fromString((target.fileName.first())).isAbsolutePath()) {
-            const auto fname = target.fileName.first().split('/').last();
-            QString definedIn = FilePath::fromString(target.definedIn).absolutePath().toString();
-            return definedIn.remove(srcDir.toString()) + '/' + fname;
+        auto fname = target.fileName.first();
+        if (FilePath::fromString(fname).isAbsolutePath()) {
+            fname.remove(buildDir.toString());
+            if (fname.startsWith('/'))
+                fname.removeFirst();
+            return fname;
         } else {
-            return target.fileName.first();
+            return fname;
         }
     }