diff --git a/CMakeLists.txt b/CMakeLists.txt
index e77c0fb8f..8463f31ce 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,6 +22,7 @@
 #   BUILD_WITH_QT6 - Build either with Qt 6 or Qt 5.
 #   NO_UPDATE_CHECK - Disable automatic checking for new application updates.
 #   IS_FLATPAK_BUILD - Set to "ON" when building RSS Guard with Flatpak.
+#   FORCE_BUNDLE_ICONS - Forcibly bundles icons into executables.
 #   USE_WEBENGINE - if specified, then QtWebEngine module for internal web browser is used.
 #                   Otherwise simple text component is used and some features will be disabled.
 #                   Default value is "false". If QtWebEngine is installed during compilation, then
@@ -110,6 +111,7 @@ option(FORCE_COLORED_OUTPUT "Always produce ANSI-colored output (GCC/Clang only)
 option(REVISION_FROM_GIT "Get revision using `git rev-parse`" ON)
 option(NO_UPDATE_CHECK "Disable automatic checking for new application updates" OFF)
 option(IS_FLATPAK_BUILD "Set to 'ON' when building RSS Guard with Flatpak." OFF)
+option(FORCE_BUNDLE_ICONS "Forcibly bundle icon themes into RSS Guard." OFF)
 
 # Import Qt libraries.
 set(QT6_MIN_VERSION 6.3.0)
diff --git a/resources/desktop/com.github.rssguard.appdata.xml b/resources/desktop/com.github.rssguard.appdata.xml
index 19bb614e4..0fce873e9 100644
--- a/resources/desktop/com.github.rssguard.appdata.xml
+++ b/resources/desktop/com.github.rssguard.appdata.xml
@@ -26,7 +26,7 @@
   <url type="donation">https://github.com/sponsors/martinrotter</url>
   <content_rating type="oars-1.1" />
   <releases>
-    <release version="4.2.3" date="2022-07-13"/>
+    <release version="4.2.3" date="2022-07-20"/>
   </releases>
   <content_rating type="oars-1.0">
     <content_attribute id="violence-cartoon">none</content_attribute>
diff --git a/resources/scripts/github-actions/build-linux-mac.sh b/resources/scripts/github-actions/build-linux-mac.sh
index 327b99eb7..bc945a9a9 100755
--- a/resources/scripts/github-actions/build-linux-mac.sh
+++ b/resources/scripts/github-actions/build-linux-mac.sh
@@ -54,7 +54,7 @@ git_tag=$(git describe --tags $(git rev-list --tags --max-count=1))
 git_revision=$(git rev-parse --short HEAD)
 
 mkdir rssguard-build && cd rssguard-build
-cmake .. -G Ninja -DCMAKE_OSX_ARCHITECTURES="x86_64;arm64" -DCMAKE_BUILD_TYPE="MinSizeRel" -DCMAKE_INSTALL_PREFIX="$prefix" -DREVISION_FROM_GIT="ON" -DBUILD_WITH_QT6="$BUILD_WITH_QT6" -DUSE_WEBENGINE="$webengine" -DFEEDLY_CLIENT_ID="$FEEDLY_CLIENT_ID" -DFEEDLY_CLIENT_SECRET="$FEEDLY_CLIENT_SECRET" -DGMAIL_CLIENT_ID="$GMAIL_CLIENT_ID" -DGMAIL_CLIENT_SECRET="$GMAIL_CLIENT_SECRET" -DINOREADER_CLIENT_ID="$INOREADER_CLIENT_ID" -DINOREADER_CLIENT_SECRET="$INOREADER_CLIENT_SECRET"
+cmake .. -G Ninja -DCMAKE_OSX_ARCHITECTURES="x86_64;arm64" -DFORCE_BUNDLE_ICONS="ON" -DCMAKE_BUILD_TYPE="MinSizeRel" -DCMAKE_INSTALL_PREFIX="$prefix" -DREVISION_FROM_GIT="ON" -DBUILD_WITH_QT6="$BUILD_WITH_QT6" -DUSE_WEBENGINE="$webengine" -DFEEDLY_CLIENT_ID="$FEEDLY_CLIENT_ID" -DFEEDLY_CLIENT_SECRET="$FEEDLY_CLIENT_SECRET" -DGMAIL_CLIENT_ID="$GMAIL_CLIENT_ID" -DGMAIL_CLIENT_SECRET="$GMAIL_CLIENT_SECRET" -DINOREADER_CLIENT_ID="$INOREADER_CLIENT_ID" -DINOREADER_CLIENT_SECRET="$INOREADER_CLIENT_SECRET"
 cmake --build .
 cmake --install . --prefix "$prefix"
 
diff --git a/src/librssguard/CMakeLists.txt b/src/librssguard/CMakeLists.txt
index d6f57f79b..6a7ea25f4 100644
--- a/src/librssguard/CMakeLists.txt
+++ b/src/librssguard/CMakeLists.txt
@@ -517,8 +517,7 @@ set(GMAIL_CLIENT_SECRET "" CACHE STRING "GMail client secret")
 set(INOREADER_CLIENT_ID "" CACHE STRING "Inoreader client ID")
 set(INOREADER_CLIENT_SECRET "" CACHE STRING "Inoreader client secret")
 
-# Bundle icons on some platforms which do not provide system-wide icon themes.
-if(APPLE OR WIN32 OR OS2)
+if(APPLE OR WIN32 OR OS2 OR FORCE_BUNDLE_ICONS)
   qt_add_resources(SOURCES ${CMAKE_SOURCE_DIR}/resources/icons.qrc)
 endif()
 
@@ -530,6 +529,17 @@ endif()
 
 add_library(rssguard SHARED ${SOURCES} ${QM_FILES})
 
+# Bundle icons on some platforms which do not provide system-wide icon themes.
+if(FORCE_BUNDLE_ICONS)
+  target_compile_definitions(rssguard
+    PRIVATE
+
+    FORCE_BUNDLE_ICONS
+  )
+
+  message(STATUS "Forcibly bundling icon themes.")
+endif()
+
 # Add OAuth services definitions.
 if(NOT FEEDLY_CLIENT_ID STREQUAL "" AND NOT FEEDLY_CLIENT_SECRET STREQUAL "")
   target_compile_definitions(rssguard
diff --git a/src/librssguard/definitions/definitions.h b/src/librssguard/definitions/definitions.h
index fe00d12a8..0670b7f04 100644
--- a/src/librssguard/definitions/definitions.h
+++ b/src/librssguard/definitions/definitions.h
@@ -217,9 +217,14 @@
 #define APP_SKIN_METADATA_FILE "metadata.xml"
 #define APP_STYLE_DEFAULT "Fusion"
 
-#if defined(Q_OS_UNIX) && !defined(Q_OS_MACOS)
+#if defined(FORCE_BUNDLE_ICONS)
+// Forcibly bundle icons.
+#define APP_THEME_DEFAULT "Breeze"
+#elif defined(Q_OS_UNIX) && !defined(Q_OS_MACOS)
+// DO NOT icons on Linux.
 #define APP_THEME_DEFAULT ""
 #else
+// Bundle icons otherwise.
 #define APP_THEME_DEFAULT "Breeze"
 #endif