diff --git a/build/linux/aarch64/make-Makefiles.bash b/build/linux/aarch64/make-Makefiles.bash
index de9e8da4..2571b093 100755
--- a/build/linux/aarch64/make-Makefiles.bash
+++ b/build/linux/aarch64/make-Makefiles.bash
@@ -23,6 +23,5 @@ fi
 # generate Makefile
 cmake -DCMAKE_BUILD_TYPE=Release \
       -DCMAKE_TOOLCHAIN_FILE=./arm.linux.cross.cmake \
-      -DHAVE_DRM=ON \
       -G "Unix Makefiles" \
       ${MPP_TOP}
diff --git a/debian/rules b/debian/rules
index f8cb9987..1086f035 100755
--- a/debian/rules
+++ b/debian/rules
@@ -29,5 +29,4 @@ endif
 override_dh_auto_configure:
 	dh_auto_configure -- \
 	-DCMAKE_BUILD_TYPE=Release \
-	-DHAVE_DRM=ON \
 	-DARM_MIX_32_64=ON
diff --git a/osal/CMakeLists.txt b/osal/CMakeLists.txt
index e635b551..34cb1944 100644
--- a/osal/CMakeLists.txt
+++ b/osal/CMakeLists.txt
@@ -10,20 +10,12 @@ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_REENTRANT -D_GNU_SOURCE")
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
 
-if (HAVE_DRM)
-    add_definitions(-DHAVE_DRM)
-    set(DRM_FILES allocator/allocator_drm.c)
-    message(STATUS "compile with drm support")
-else()
-    message(STATUS "compile without drm support")
-endif()
-
 set(MPP_ALLOCATOR
     allocator/allocator_std.c
     allocator/allocator_ion.c
     allocator/allocator_ext_dma.c
     allocator/allocator_dma_heap.c
-    ${DRM_FILES}
+    allocator/allocator_drm.c
 )
 
 set(MPP_DRIVER