diff --git a/cmake/modules/DetectMachine.cmake b/cmake/modules/DetectMachine.cmake
index ccb8638be..5bbbef44e 100644
--- a/cmake/modules/DetectMachine.cmake
+++ b/cmake/modules/DetectMachine.cmake
@@ -1,11 +1,11 @@
 IF(WIN32)
 	SET(LMMS_BUILD_WIN32 1)
-ELSE(WIN32)
-	IF(APPLE)
-		SET(LMMS_BUILD_APPLE 1)
-	ELSE(APPLE)
-		SET(LMMS_BUILD_LINUX 1)
-	ENDIF(APPLE)
+ELSEIF(APPLE)
+	SET(LMMS_BUILD_APPLE 1)
+ELSEIF(HAIKU)
+	SET(LMMS_BUILD_HAIKU 1)
+ELSE()
+	SET(LMMS_BUILD_LINUX 1)
 ENDIF(WIN32)
 
 MESSAGE("PROCESSOR: ${CMAKE_SYSTEM_PROCESSOR}")
diff --git a/lmmsconfig.h.in b/lmmsconfig.h.in
index d645c5025..496d0db67 100644
--- a/lmmsconfig.h.in
+++ b/lmmsconfig.h.in
@@ -2,6 +2,7 @@
 #cmakedefine LMMS_BUILD_WIN32
 #cmakedefine LMMS_BUILD_WIN64
 #cmakedefine LMMS_BUILD_APPLE
+#cmakedefine LMMS_BUILD_HAIKU
 
 #cmakedefine LMMS_HOST_X86
 #cmakedefine LMMS_HOST_X86_64