diff --git a/src/util/libdrm.h b/src/util/libdrm.h
index 045d7243078..3ba9c396300 100644
--- a/src/util/libdrm.h
+++ b/src/util/libdrm.h
@@ -91,6 +91,7 @@ typedef struct _drmDevice {
     /* ... */
 } drmDevice, *drmDevicePtr;
 
+#define DRM_DEVICE_GET_PCI_REVISION (1 << 0)
 static inline int
 drmGetDevice2(int fd, uint32_t flags, drmDevicePtr *device)
 {