diff --git a/CMakeLists.txt b/CMakeLists.txt
index 41f2311af98..e01a37d3b3e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -88,14 +88,16 @@ INCLUDE(CMake/macros.cmake)
 #Platform specifics
 
 IF(UNIX)
-  INCLUDE(${CMAKE_ROOT}/Modules/FindOpenAL.cmake)
-  IF(OPENAL_FOUND)
-    SET(WITH_OPENAL ON)
-    SET(OPENAL_LIB ${OPENAL_LIBRARY})
-    SET(OPENAL_INC ${OPENAL_INCLUDE_DIR})
-  ELSE(OPENAL_FOUND)
-    SET(WITH_OPENAL OFF)
-  ENDIF(OPENAL_FOUND)
+  IF(WITH_OPENAL)
+    INCLUDE(${CMAKE_ROOT}/Modules/FindOpenAL.cmake)
+    IF(OPENAL_FOUND)
+      SET(WITH_OPENAL ON)
+      SET(OPENAL_LIB ${OPENAL_LIBRARY})
+      SET(OPENAL_INC ${OPENAL_INCLUDE_DIR})
+    ELSE(OPENAL_FOUND)
+      SET(WITH_OPENAL OFF)
+    ENDIF(OPENAL_FOUND)
+  ENDIF(WITH_OPENAL)
 
   FIND_LIBRARY(ALUT_LIBRARY
     NAMES alut