diff --git a/README.md b/README.md
index e7af75279..da2640278 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ RSS Guard
 
 ### [Discord server](https://discord.gg/7xbVMPPNqH) | [Downloads](https://github.com/martinrotter/rssguard/releases) | [Development builds](https://github.com/martinrotter/rssguard/releases/tag/devbuild) | [Documentation](https://github.com/martinrotter/rssguard/blob/master/resources/docs/Documentation.md)
 
-RSS Guard is simple RSS/ATOM feed reader for Windows, Linux or Mac OS X which can work with RSS/ATOM/JSON and also supports many online RSS services:
+RSS Guard is simple RSS/ATOM feed reader for Windows, Linux or macOS which can work with RSS/ATOM/JSON and also supports many online RSS services:
 * [Tiny Tiny RSS](https://tt-rss.org),
 * [Inoreader](https://www.inoreader.com) (via Google Reader API plugin),
 * [Nextcloud News](https://apps.nextcloud.com/apps/news),
diff --git a/build.pro b/build.pro
index 28cefbab8..1ce8ffe95 100644
--- a/build.pro
+++ b/build.pro
@@ -32,7 +32,7 @@
 #   {FEEDLY,GMAIL,INOREADER}_CLIENT_SECRET - preconfigured OAuth cliend SECRET.
 #
 # Other information:
-#   - supports Windows, Linux, Mac OS X, OS/2, Android,
+#   - supports Windows, Linux, macOS, OS/2, Android,
 #   - Qt 5.9.0 or higher is required,
 #   - if you wish to make packages for Windows, then you must initialize all submodules within repository before compilation,
 #   - C++ 11/17 is required.
diff --git a/resources/docs/Documentation.md b/resources/docs/Documentation.md
index 9fee21e09..49ba1da3b 100644
--- a/resources/docs/Documentation.md
+++ b/resources/docs/Documentation.md
@@ -320,7 +320,7 @@ Binary name (interpreter) must be always be specified, while arguments not. Be v
 
 <img alt="alt-img" src="images/scrape-source.png" width="350px">
 
-Note that the above examples are cross-platform and you can use the exact same command on Windows, Linux or Mac OS X, if your operating system is properly configured.
+Note that the above examples are cross-platform and you can use the exact same command on Windows, Linux or macOS, if your operating system is properly configured.
 
 RSS Guard offers [placeholder](#userd-plac) `%data%` which is automatically replaced with full path to RSS Guard's [user data folder](#userd), allowing you to make your configuration fully portable. You can, therefore, use something like this as source script line: `bash#%data%/scripts/download-feed.sh`.
 
diff --git a/resources/scripts/github-actions/build-linux-mac.sh b/resources/scripts/github-actions/build-linux-mac.sh
index 4e4416b0a..c71a76ae5 100755
--- a/resources/scripts/github-actions/build-linux-mac.sh
+++ b/resources/scripts/github-actions/build-linux-mac.sh
@@ -8,7 +8,7 @@ if [[ "$os" == *"ubuntu"* ]]; then
   echo "We are building for GNU/Linux on Ubuntu."
   is_linux=true
 else
-  echo "We are building for Mac OS X."
+  echo "We are building for macOS."
   is_linux=false
 fi
 
diff --git a/src/librssguard/definitions/definitions.h b/src/librssguard/definitions/definitions.h
index 6bb6e7425..45605aa06 100644
--- a/src/librssguard/definitions/definitions.h
+++ b/src/librssguard/definitions/definitions.h
@@ -52,7 +52,7 @@
 #define DEFAULT_SQL_MESSAGES_FILTER           "0 > 1"
 #define MAX_MULTICOLUMN_SORT_STATES           3
 #define RELEASES_LIST                         "https://api.github.com/repos/martinrotter/rssguard/releases"
-#define MSG_FILTERING_HELP                    "https://github.com/martinrotter/rssguard/blob/master/resources/docs/Message-filters.md#message-filtering"
+#define MSG_FILTERING_HELP                    "https://github.com/martinrotter/rssguard/blob/master/resources/docs/Documentation.md#fltr"
 #define URL_REGEXP "^(http|https|feed|ftp):\\/\\/[\\w\\-_]+(\\.[\\w\\-_]+)+([\\w\\-\\.,@?^=%&amp;:/~\\+#]*[\\w\\-\\@?^=%&amp;/~\\+#])?$"
 #define SCRIPT_SOURCE_TYPE_REGEXP             "^.+#.*$"
 #define TEXT_TITLE_LIMIT                      30
@@ -256,7 +256,7 @@
 #elif defined(Q_OS_OS2)
 #define OS_ID   "OS/2"
 #elif defined(Q_OS_OSX)
-#define OS_ID   "Mac OS X"
+#define OS_ID   "macOS"
 #elif defined(Q_OS_WIN)
 #define OS_ID   "Windows"
 #elif defined(Q_OS_ANDROID)
diff --git a/src/rssguard/main.cpp b/src/rssguard/main.cpp
index 3cf6aa4cf..b520bee9e 100644
--- a/src/rssguard/main.cpp
+++ b/src/rssguard/main.cpp
@@ -30,7 +30,7 @@ int main(int argc, char* argv[]) {
   QApplication::setDesktopFileName(APP_DESKTOP_ENTRY_FILE);
 #endif
 
-  // Ensure that ini format is used as application settings storage on Mac OS.
+  // Ensure that ini format is used as application settings storage on macOS.
   QSettings::setDefaultFormat(QSettings::IniFormat);
 
 #if defined(Q_OS_MACOS)