diff --git a/source/misc/docker/Dockerfile.Ubuntu14.04build_Standalone b/source/misc/docker/Dockerfile.Ubuntu14.04build_Standalone
index 67c5317..8fee1a3 100644
--- a/source/misc/docker/Dockerfile.Ubuntu14.04build_Standalone
+++ b/source/misc/docker/Dockerfile.Ubuntu14.04build_Standalone
@@ -1,6 +1,6 @@
 FROM ubuntu:14.04
 
-RUN apt-get update && apt-get install -y build-essential libboost-dev cmake pkg-config libboost-program-options-dev libfreetype6-dev libvorbis-dev libgl1-mesa-dev libutfcpp-dev zip gettext
+RUN apt-get update && apt-get install -y build-essential libboost-dev cmake pkg-config libboost-program-options-dev libfreetype6-dev libvorbis-dev libgl1-mesa-dev libpulse-dev libutfcpp-dev zip gettext
 
 COPY source/misc/standalone/compile_requirements.sh /
 RUN /compile_requirements.sh
diff --git a/source/misc/docker/Dockerfile.Ubuntu14.04build_Standalone32 b/source/misc/docker/Dockerfile.Ubuntu14.04build_Standalone32
index 8524b55..eace8f6 100644
--- a/source/misc/docker/Dockerfile.Ubuntu14.04build_Standalone32
+++ b/source/misc/docker/Dockerfile.Ubuntu14.04build_Standalone32
@@ -1,6 +1,6 @@
 FROM ioft/i386-ubuntu:14.04
 
-RUN apt-get update && apt-get install -y build-essential libboost-dev cmake pkg-config libboost-program-options-dev libfreetype6-dev libvorbis-dev libgl1-mesa-dev libutfcpp-dev zip gettext
+RUN apt-get update && apt-get install -y build-essential libboost-dev cmake pkg-config libboost-program-options-dev libfreetype6-dev libvorbis-dev libgl1-mesa-dev libpulse-dev libutfcpp-dev zip gettext
 
 COPY source/misc/standalone/compile_requirements.sh /
 RUN /compile_requirements.sh
diff --git a/source/misc/standalone/README.txt b/source/misc/standalone/README.txt
index 65586a5..22528ba 100644
--- a/source/misc/standalone/README.txt
+++ b/source/misc/standalone/README.txt
@@ -5,5 +5,6 @@ This is the standalone version. It is precompiled and includes the necessary lib
 Both a 32 bit and 64 bit version is provided.
 It has been tested on Ubuntu 14.04 and Fedora 22
 Some systems might require the game to be launched from the command line.
+PulseAudio is required for sound.
 
 Check www.blockattack.net for more info.