diff --git a/src/libs/languageserverprotocol/languagefeatures.cpp b/src/libs/languageserverprotocol/languagefeatures.cpp
index 7ad4eae3d65..cfb4cc6fabd 100644
--- a/src/libs/languageserverprotocol/languagefeatures.cpp
+++ b/src/libs/languageserverprotocol/languagefeatures.cpp
@@ -343,7 +343,7 @@ MarkedString::MarkedString(const QJsonValue &value)
     }
 }
 
-LanguageServerProtocol::MarkedString::operator const QJsonValue() const
+LanguageServerProtocol::MarkedString::operator QJsonValue() const
 {
     if (auto val = Utils::get_if<QString>(this))
         return *val;
diff --git a/src/libs/languageserverprotocol/languagefeatures.h b/src/libs/languageserverprotocol/languagefeatures.h
index b7045fb58dd..ddd732718a1 100644
--- a/src/libs/languageserverprotocol/languagefeatures.h
+++ b/src/libs/languageserverprotocol/languagefeatures.h
@@ -71,7 +71,7 @@ public:
     {}
     explicit MarkedString(const QJsonValue &value);
 
-    operator const QJsonValue() const;
+    operator QJsonValue() const;
 };
 
 class LANGUAGESERVERPROTOCOL_EXPORT HoverContent
diff --git a/src/libs/languageserverprotocol/lsptypes.cpp b/src/libs/languageserverprotocol/lsptypes.cpp
index e77997ca895..e5abcf80369 100644
--- a/src/libs/languageserverprotocol/lsptypes.cpp
+++ b/src/libs/languageserverprotocol/lsptypes.cpp
@@ -420,7 +420,7 @@ MarkupKind::MarkupKind(const QJsonValue &value)
     m_value = value.toString() == "markdown" ? markdown : plaintext;
 }
 
-LanguageServerProtocol::MarkupKind::operator const QJsonValue() const
+LanguageServerProtocol::MarkupKind::operator QJsonValue() const
 {
     switch (m_value) {
     case MarkupKind::markdown:
diff --git a/src/libs/languageserverprotocol/lsptypes.h b/src/libs/languageserverprotocol/lsptypes.h
index 957db75ec13..80c9a8cb61e 100644
--- a/src/libs/languageserverprotocol/lsptypes.h
+++ b/src/libs/languageserverprotocol/lsptypes.h
@@ -388,7 +388,7 @@ public:
     {}
     MarkupKind(const QJsonValue &value);
 
-    operator const QJsonValue() const;
+    operator QJsonValue() const;
     Value value() const { return m_value; }
 
     bool operator==(const Value &value) const { return m_value == value; }