diff --git a/modules/ECMGeneratePkgConfigFile.cmake b/modules/ECMGeneratePkgConfigFile.cmake
--- a/modules/ECMGeneratePkgConfigFile.cmake
+++ b/modules/ECMGeneratePkgConfigFile.cmake
@@ -16,7 +16,7 @@
# [INCLUDE_INSTALL_DIR
]
# [LIB_INSTALL_DIR ]
# [DEFINES -D...]
-# [DESCRIPTION ]
+# [DESCRIPTION ] # since 5.41.0
# [INSTALL])
#
# ``BASE_NAME`` is the name of the module. It's the name projects will use to
@@ -45,7 +45,7 @@
#
# ``DESCRIPTION`` describes what this library is. If it's not specified, CMake
# will first try to get the description from the metainfo.yaml file or will
-# create one based on ``LIB_NAME``.
+# create one based on ``LIB_NAME``. Since 5.41.0.
#
# ``INSTALL`` will cause the module to be installed to the ``pkgconfig``
# subdirectory of ``LIB_INSTALL_DIR``, unless the ``ECM_PKGCONFIG_INSTALL_DIR``
@@ -71,7 +71,6 @@
# )
#
# Since 1.3.0.
-# ``DESCRIPTION`` available since 5.1.41
#
#=============================================================================