diff --git a/src/libs/vmisc/compatibility.h b/src/libs/vmisc/compatibility.h
index f7fe01ad6..07c2aff69 100644
--- a/src/libs/vmisc/compatibility.h
+++ b/src/libs/vmisc/compatibility.h
@@ -113,13 +113,13 @@ QT_WARNING_PUSH
 QT_WARNING_DISABLE_CLANG("-Wreserved-identifier")
 
 //---------------------------------------------------------------------------------------------------------------------
-Q_DECL_CONSTEXPR inline auto operator"" _L1(char ch) Q_DECL_NOEXCEPT->QLatin1Char
+Q_DECL_CONSTEXPR inline auto operator""_L1(char ch)Q_DECL_NOEXCEPT->QLatin1Char
 {
     return QLatin1Char(ch);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-Q_DECL_CONSTEXPR inline auto operator"" _L1(const char *str, size_t size) Q_DECL_NOEXCEPT->QLatin1String
+Q_DECL_CONSTEXPR inline auto operator""_L1(const char *str, size_t size)Q_DECL_NOEXCEPT->QLatin1String
 {
     return QLatin1String(str, static_cast<vsizetype>(size));
 }
@@ -127,13 +127,13 @@ Q_DECL_CONSTEXPR inline auto operator"" _L1(const char *str, size_t size) Q_DECL
 QT_WARNING_POP
 
 //---------------------------------------------------------------------------------------------------------------------
-inline auto operator"" _ba(const char *str, size_t size) Q_DECL_NOEXCEPT->QByteArray
+inline auto operator""_ba(const char *str, size_t size)Q_DECL_NOEXCEPT->QByteArray
 {
     return {str, static_cast<vsizetype>(size)};
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-inline auto operator"" _s(const char16_t *str, size_t size) Q_DECL_NOEXCEPT->QString
+inline auto operator""_s(const char16_t *str, size_t size)Q_DECL_NOEXCEPT->QString
 {
     return QString::fromUtf16(str, static_cast<vsizetype>(size));
 }