diff --git a/src/libs/clangbackendipc/projectpartsdonotexistmessage.cpp b/src/libs/clangbackendipc/projectpartsdonotexistmessage.cpp
index c30f90b81ec..879c52129ef 100644
--- a/src/libs/clangbackendipc/projectpartsdonotexistmessage.cpp
+++ b/src/libs/clangbackendipc/projectpartsdonotexistmessage.cpp
@@ -25,48 +25,17 @@
 
 #include "projectpartsdonotexistmessage.h"
 
-#include <QDataStream>
 #include <QDebug>
 
 #include <ostream>
 
 namespace ClangBackEnd {
 
-ProjectPartsDoNotExistMessage::ProjectPartsDoNotExistMessage(const Utf8StringVector &projectPartIds)
-    : projectPartIds_(projectPartIds)
-{
-}
-
-
-const Utf8StringVector &ProjectPartsDoNotExistMessage::projectPartIds() const
-{
-    return projectPartIds_;
-}
-
-QDataStream &operator<<(QDataStream &out, const ProjectPartsDoNotExistMessage &message)
-{
-    out << message.projectPartIds_;
-
-    return out;
-}
-
-QDataStream &operator>>(QDataStream &in, ProjectPartsDoNotExistMessage &message)
-{
-    in >> message.projectPartIds_;
-
-    return in;
-}
-
-bool operator==(const ProjectPartsDoNotExistMessage &first, const ProjectPartsDoNotExistMessage &second)
-{
-    return first.projectPartIds_ == second.projectPartIds_;
-}
-
 QDebug operator<<(QDebug debug, const ProjectPartsDoNotExistMessage &message)
 {
     debug.nospace() << "ProjectPartDoesNotExistMessage(";
 
-    debug.nospace() << message.projectPartIds_;
+    debug.nospace() << message.projectPartIds();
 
     debug.nospace() << ")";
 
diff --git a/src/libs/clangbackendipc/projectpartsdonotexistmessage.h b/src/libs/clangbackendipc/projectpartsdonotexistmessage.h
index e896675ee59..d0c84451279 100644
--- a/src/libs/clangbackendipc/projectpartsdonotexistmessage.h
+++ b/src/libs/clangbackendipc/projectpartsdonotexistmessage.h
@@ -29,29 +29,47 @@
 
 #include <utf8stringvector.h>
 
+#include <QDataStream>
+
 namespace ClangBackEnd {
 
-class CMBIPC_EXPORT ProjectPartsDoNotExistMessage
+class ProjectPartsDoNotExistMessage
 {
-    friend CMBIPC_EXPORT QDataStream &operator<<(QDataStream &out, const ProjectPartsDoNotExistMessage &message);
-    friend CMBIPC_EXPORT QDataStream &operator>>(QDataStream &in, ProjectPartsDoNotExistMessage &message);
-    friend CMBIPC_EXPORT bool operator==(const ProjectPartsDoNotExistMessage &first, const ProjectPartsDoNotExistMessage &second);
-    friend CMBIPC_EXPORT QDebug operator<<(QDebug debug, const ProjectPartsDoNotExistMessage &message);
-    friend void PrintTo(const ProjectPartsDoNotExistMessage &message, ::std::ostream* os);
 public:
     ProjectPartsDoNotExistMessage() = default;
-    ProjectPartsDoNotExistMessage(const Utf8StringVector &projectPartIds);
+    ProjectPartsDoNotExistMessage(const Utf8StringVector &projectPartIds)
+        : projectPartIds_(projectPartIds)
+    {
+    }
 
-    const Utf8StringVector &projectPartIds() const;
+    const Utf8StringVector &projectPartIds() const
+    {
+        return projectPartIds_;
+    }
+
+    friend QDataStream &operator<<(QDataStream &out, const ProjectPartsDoNotExistMessage &message)
+    {
+        out << message.projectPartIds_;
+
+        return out;
+    }
+
+    friend QDataStream &operator>>(QDataStream &in, ProjectPartsDoNotExistMessage &message)
+    {
+        in >> message.projectPartIds_;
+
+        return in;
+    }
+
+    friend bool operator==(const ProjectPartsDoNotExistMessage &first, const ProjectPartsDoNotExistMessage &second)
+    {
+        return first.projectPartIds_ == second.projectPartIds_;
+    }
 
 private:
     Utf8StringVector projectPartIds_;
 };
 
-CMBIPC_EXPORT QDataStream &operator<<(QDataStream &out, const ProjectPartsDoNotExistMessage &message);
-CMBIPC_EXPORT QDataStream &operator>>(QDataStream &in, ProjectPartsDoNotExistMessage &message);
-CMBIPC_EXPORT bool operator==(const ProjectPartsDoNotExistMessage &first, const ProjectPartsDoNotExistMessage &second);
-
 CMBIPC_EXPORT QDebug operator<<(QDebug debug, const ProjectPartsDoNotExistMessage &message);
 void PrintTo(const ProjectPartsDoNotExistMessage &message, ::std::ostream* os);