diff --git a/src/corelib/tools/qhash.cpp b/src/corelib/tools/qhash.cpp
index 2d9b6750c20..9b69c793893 100644
--- a/src/corelib/tools/qhash.cpp
+++ b/src/corelib/tools/qhash.cpp
@@ -1415,7 +1415,7 @@ uint qt_hash(QStringView key, uint chained) noexcept
     Returns the hash value for the \a key, using \a seed to seed the calculation.
 */
 
-/*! \fn size_t qHash(float key, size_t seed) noexcept
+/*! \fn size_t qHash(float key, size_t seed = 0) noexcept
     \relates QHash
     \since 5.3
 
diff --git a/src/corelib/tools/qtaggedpointer.qdoc b/src/corelib/tools/qtaggedpointer.qdoc
index acabf7047fa..f910e35b69e 100644
--- a/src/corelib/tools/qtaggedpointer.qdoc
+++ b/src/corelib/tools/qtaggedpointer.qdoc
@@ -187,7 +187,7 @@
 */
 
 /*!
-    \fn template <typename T, typename Tag> qHash(QTaggedPointer<T, Tag> key, std::size_t seed)
+    \fn template <typename T, typename Tag> qHash(QTaggedPointer<T, Tag> key, std::size_t seed = 0)
     \relates QTaggedPointer
 
     Returns the hash value for the \a key, using \a seed to seed the calculation.
diff --git a/src/corelib/tools/qversionnumber.cpp b/src/corelib/tools/qversionnumber.cpp
index 7d96b43898a..7d6ddc9bcd3 100644
--- a/src/corelib/tools/qversionnumber.cpp
+++ b/src/corelib/tools/qversionnumber.cpp
@@ -525,7 +525,6 @@ QDebug operator<<(QDebug debug, const QVersionNumber &version)
 #endif
 
 /*!
-    \fn size_t qHash(const QVersionNumber &key, size_t seed)
     \relates QHash
     \since 5.6
 
@@ -723,7 +722,6 @@ QDebug operator<<(QDebug debug, const QTypeRevision &revision)
 #endif
 
 /*!
-    \fn size_t qHash(const QTypeRevision &key, size_t seed)
     \relates QHash
     \since 6.0
 
diff --git a/src/gui/vulkan/qvulkaninstance.cpp b/src/gui/vulkan/qvulkaninstance.cpp
index 3b1b715c32f..bfc4b38b5a9 100644
--- a/src/gui/vulkan/qvulkaninstance.cpp
+++ b/src/gui/vulkan/qvulkaninstance.cpp
@@ -296,7 +296,7 @@ QVulkanInstance::~QVulkanInstance()
 */
 
 /*!
-    \fn size_t qHash(const QVulkanLayer &key, size_t seed)
+    \fn size_t qHash(const QVulkanLayer &key, size_t seed = 0)
     \since 5.10
     \relates QVulkanLayer
 
@@ -340,7 +340,7 @@ QVulkanInstance::~QVulkanInstance()
 */
 
 /*!
-    \fn size_t qHash(const QVulkanExtension &key, size_t seed)
+    \fn size_t qHash(const QVulkanExtension &key, size_t seed = 0)
     \since 5.10
     \relates QVulkanExtension
 
diff --git a/src/network/ssl/qocspresponse.cpp b/src/network/ssl/qocspresponse.cpp
index 9911988aff3..74e2c814fd2 100644
--- a/src/network/ssl/qocspresponse.cpp
+++ b/src/network/ssl/qocspresponse.cpp
@@ -201,8 +201,6 @@ bool QOcspResponse::isEqual(const QOcspResponse &other) const
 }
 
 /*!
-    \fn size_t qHash(const QOcspResponse &response, size_t seed)
-
     Returns the hash value for the \a response, using \a seed to seed the calculation.
 
     \since 5.13
diff --git a/src/network/ssl/qsslcertificate.cpp b/src/network/ssl/qsslcertificate.cpp
index 39745427ebd..0f851ec7c92 100644
--- a/src/network/ssl/qsslcertificate.cpp
+++ b/src/network/ssl/qsslcertificate.cpp
@@ -955,8 +955,6 @@ QString QSslCertificate::subjectDisplayName() const
 }
 
 /*!
-    \fn size_t qHash(const QSslCertificate &key, size_t seed)
-
     Returns the hash value for the \a key, using \a seed to seed the calculation.
     \since 5.4
     \relates QHash
diff --git a/src/network/ssl/qsslellipticcurve.cpp b/src/network/ssl/qsslellipticcurve.cpp
index 959bf1de333..77aa66f3ccd 100644
--- a/src/network/ssl/qsslellipticcurve.cpp
+++ b/src/network/ssl/qsslellipticcurve.cpp
@@ -160,7 +160,7 @@ bool QSslEllipticCurve::isTlsNamedCurve() const noexcept
 */
 
 /*!
-    \fn size_t qHash(QSslEllipticCurve curve, size_t seed)
+    \fn size_t qHash(QSslEllipticCurve curve, size_t seed = 0)
     \since 5.5
     \relates QHash