diff --git a/resources/docs/Documentation.md b/resources/docs/Documentation.md
index 9a13d392a..fb1188944 100644
--- a/resources/docs/Documentation.md
+++ b/resources/docs/Documentation.md
@@ -22,6 +22,7 @@
     * [GUI tweaking](#gui-tweaking)
 * [Miscellaneous](#miscellaneous)
     * [Command line interface](#cli)
+    * [OS/2](#cli)
     * [Cleaning database](#cleaning-database)
     * [Portable user data](#portable-user-data)
     * [Downloading new messages](#downloading-new-messages)
@@ -250,6 +251,16 @@ Options:
   -v, --version                  Displays version information.
 ```
 
+## OS/2
+RSS Guard can run on OS/2 and if you want to compile it by yourself, you need to make sure you have all dependencies installed:
+* `os2-base`,
+* all `gcc-*` packages,
+* `libc` and `libcx` up-to-date,
+* `kbuild-make`,
+* `ash`,
+* `binutils`,
+* all relevant `qt5-*` packages.
+
 ## Cleaning database
 Your RSS Guard's database can grow really big over time, therefore you might need to do its cleanup regularly. There is a dialog `Cleanup database` in `Tools` menu to do just that for you, but note that RSS Guard should run just fine even with tens of thousands of messages.
 
diff --git a/src/rssguard/rssguard.pro b/src/rssguard/rssguard.pro
index e11bbef5b..d73bb08b6 100644
--- a/src/rssguard/rssguard.pro
+++ b/src/rssguard/rssguard.pro
@@ -45,6 +45,7 @@ DEPENDPATH += $$PWD/../librssguard
 
 win32: LIBS += -L$$OUT_PWD/../librssguard/ -llibrssguard
 unix: LIBS += -L$$OUT_PWD/../librssguard/ -lrssguard
+os2: LIBS += -L$$OUT_PWD/../librssguard/ -lrssguard
 
 win32 {
   # Prepare files for NSIS.