diff --git a/README.md b/README.md
index edb25ac..6b5eafc 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,15 @@ FITD
 
 https://github.com/jmimu/FITD
 
+To be able to compile in 32 bits from 64 bit Ubuntu 20.04:
+
+    sudo apt install libsdl1.2-dev:i386 libsdl-mixer1.2-dev:i386 libglu1-mesa-dev:i386 libzzip-dev:i386 libgc-dev:i386 libstdc++-dev:i386
+    sudo apt-get install gcc-multilib g++-multilib
+
+
+Original Readme from yaz0r
+==========================
+
 What is FITD
 ------------
 
diff --git a/fitd.pro b/fitd.pro
index 26ef261..ece7dc2 100644
--- a/fitd.pro
+++ b/fitd.pro
@@ -95,5 +95,8 @@ HEADERS += \
     src/actorList.h \
     src/types.h
 
-LIBS += -lSDL -lSDL_mixer -lGL -lGLU -lz
+LIBS +=  -lSDL -lSDL_mixer -lGL -lGLU -lz -L/usr/lib/i386-linux-gnu
 INCLUDEPATH += "/usr/include/SDL"
+
+QMAKE_LFLAGS += -m32
+QMAKE_CFLAGS += -m32