diff --git a/src/venus/kdump.c b/src/venus/kdump.c
index 9f59b5843c..4e423bf2fd 100644
--- a/src/venus/kdump.c
+++ b/src/venus/kdump.c
@@ -264,10 +264,15 @@ typedef struct timeval {
 /* Avoid problems with timer_t redefinition */
 #ifndef timer_t
 #define timer_t ktimer_t
+#define timer_t_redefined
 #endif
 #include <linux/version.h>
 #include <linux/fs.h>
 #include <osi_vfs.h>
+#ifdef timer_t_redefined
+#undef timer_t
+#undef timer_t_redefined
+#endif
 #else /* AFS_LINUX20_ENV */
 #ifdef AFS_HPUX110_ENV
 #define  KERNEL