diff --git a/src/audio/CMakeLists.txt b/src/audio/CMakeLists.txt
index bbd4a61..d6271c6 100644
--- a/src/audio/CMakeLists.txt
+++ b/src/audio/CMakeLists.txt
@@ -4,13 +4,13 @@ set(adonthell_audio_SRCS
 	sound.cc
 	audio_event.cc
 	audio_event_manager.cc
-    audio_manager.cc
+	audio_manager.cc
 )
 
 set(adonthell_audio_HEADERS
 	audio_event.h
 	audio_event_manager.h
-    audio_manager.h
+	audio_manager.h
 	audio.h
 	sound.h
 )
@@ -50,4 +50,4 @@ set_target_properties(audio-backend-sdl PROPERTIES PREFIX "_" OUTPUT_NAME "sdl")
 # Install Stuff
 adonthell_install_lib(adonthell_audio)
 adonthell_install_include(audio "${adonthell_audio_HEADERS}")
-adonthell_install_backend(audio audio-backend-sdl)
\ No newline at end of file
+adonthell_install_backend(audio audio-backend-sdl)
diff --git a/src/audio/Makefile.am b/src/audio/Makefile.am
index 88f55cd..5abad45 100644
--- a/src/audio/Makefile.am
+++ b/src/audio/Makefile.am
@@ -47,3 +47,11 @@ _sdl_la_LIBADD = $(SDL_LIBS) -lSDL_mixer -ladonthell_audio -lstdc++
 ## define dependencies in case of parallel build
 _sdl_la_DEPENDENCIES = libadonthell_audio.la
 
+## Unit tests
+noinst_PROGRAMS = test_audio_manager
+
+test_audio_manager_SOURCES  = $(libadonthell_audio_la_SOURCES) test_audio_manager.cc
+test_audio_manager_CXXFLAGS = $(libadonthell_audio_la_CXXFLAGS)
+test_audio_manager_LDADD    = $(libadonthell_audio_la_LIBADD) -lgtest
+
+TESTS = test_audio_manager
diff --git a/src/audio/audio_manager.cc b/src/audio/audio_manager.cc
index 22b6d13..07bb556 100644
--- a/src/audio/audio_manager.cc
+++ b/src/audio/audio_manager.cc
@@ -33,6 +33,13 @@
 
 namespace audio
 {
+    // Static data must be initialised
+    int     audio_manager::audio_rate_;
+    u_int16 audio_manager::audio_format_;
+    int     audio_manager::audio_channels_;
+    int     audio_manager::audio_buffers_;
+    int     audio_manager::audio_mixchannels_;
+
     bool audio_manager::set_audio_rate(const int audio_rate) {
         audio_rate_ = audio_rate;
 
diff --git a/src/test/audio/audio_manager.cc b/src/audio/test_audio_manager.cc
similarity index 93%
rename from src/test/audio/audio_manager.cc
rename to src/audio/test_audio_manager.cc
index fa26e34..87c4a7b 100644
--- a/src/test/audio/audio_manager.cc
+++ b/src/audio/test_audio_manager.cc
@@ -29,9 +29,9 @@
  */
 
 
-#include <gtest/gtest.h>
+#include "audio/audio_manager.h"
 
-#include "audio/audio_manager"
+#include <gtest/gtest.h>
 
 namespace audio
 {
@@ -65,3 +65,10 @@ namespace audio
     }
 
 } // namespace{}
+
+
+int main(int argc, char **argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+
+    return RUN_ALL_TESTS();
+}