diff --git a/neo/CMakeLists.txt b/neo/CMakeLists.txt
index 918e9773..76c9a858 100644
--- a/neo/CMakeLists.txt
+++ b/neo/CMakeLists.txt
@@ -1722,9 +1722,11 @@ else()
             endif()
 
 			list(APPEND RBDOOM3_INCLUDES ${OPENAL_INCLUDES})
-			list(APPEND RBDOOM3_SOURCES
-				${OPENAL_SOURCES}
-				${DOOMCLASSIC_OPENAL_SOURCES})
+			list(APPEND RBDOOM3_SOURCES ${OPENAL_SOURCES})
+				
+			if(DOOM_CLASSIC)
+				list(APPEND RBDOOM3_SOURCES	${DOOMCLASSIC_OPENAL_SOURCES})
+			endif()
 		else()
 			list(APPEND RBDOOM3_INCLUDES ${STUBAUDIO_INCLUDES})
 			list(APPEND RBDOOM3_SOURCES ${STUBAUDIO_SOURCES})