diff --git a/render/dmabuf_linux.c b/render/dmabuf_linux.c
index cf06229c5..53fb909bc 100644
--- a/render/dmabuf_linux.c
+++ b/render/dmabuf_linux.c
@@ -50,30 +50,6 @@ bool dmabuf_check_sync_file_import_export(void) {
 	return KERNEL_VERSION(major, minor, patch) >= KERNEL_VERSION(5, 20, 0);
 }
 
-// TODO: drop these definitions once widespread
-
-#if !defined(DMA_BUF_IOCTL_IMPORT_SYNC_FILE)
-
-struct dma_buf_import_sync_file {
-	__u32 flags;
-	__s32 fd;
-};
-
-#define DMA_BUF_IOCTL_IMPORT_SYNC_FILE _IOW(DMA_BUF_BASE, 3, struct dma_buf_import_sync_file)
-
-#endif
-
-#if !defined(DMA_BUF_IOCTL_EXPORT_SYNC_FILE)
-
-struct dma_buf_export_sync_file {
-	__u32 flags;
-	__s32 fd;
-};
-
-#define DMA_BUF_IOCTL_EXPORT_SYNC_FILE _IOWR(DMA_BUF_BASE, 2, struct dma_buf_export_sync_file)
-
-#endif
-
 bool dmabuf_import_sync_file(int dmabuf_fd, uint32_t flags, int sync_file_fd) {
 	struct dma_buf_import_sync_file data = {
 		.flags = flags,
diff --git a/render/meson.build b/render/meson.build
index 7c1254078..aaaf2ec48 100644
--- a/render/meson.build
+++ b/render/meson.build
@@ -17,7 +17,11 @@ wlr_files += files(
 	'wlr_texture.c',
 )
 
-if cc.has_header('linux/dma-buf.h') and target_machine.system() == 'linux'
+has_dma_buf_import_sync_file = cc.has_header('linux/dma-buf.h') and cc.has_define(
+	'DMA_BUF_IOCTL_IMPORT_SYNC_FILE',
+	prefix: '#include <linux/dma-buf.h>',
+)
+if has_dma_buf_import_sync_file and target_machine.system() == 'linux'
 	wlr_files += files('dmabuf_linux.c')
 else
 	wlr_files += files('dmabuf_fallback.c')