diff --git a/src/rx/LINUX/rx_kmutex.c b/src/rx/LINUX/rx_kmutex.c
index af72212165..a420d5ee3e 100644
--- a/src/rx/LINUX/rx_kmutex.c
+++ b/src/rx/LINUX/rx_kmutex.c
@@ -23,7 +23,7 @@ RCSID
 #include "rx_kmutex.h"
 #include "rx/rx_kernel.h"
 
-#ifdef CONFIG_SMP
+#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT)
 
 void
 afs_mutex_init(afs_kmutex_t * l)
diff --git a/src/rx/LINUX/rx_kmutex.h b/src/rx/LINUX/rx_kmutex.h
index b9e7886337..bc1bed8155 100644
--- a/src/rx/LINUX/rx_kmutex.h
+++ b/src/rx/LINUX/rx_kmutex.h
@@ -24,7 +24,7 @@
 #define	AFS_GLOBAL_RXLOCK_KERNEL 1
 
 
-#ifdef CONFIG_SMP
+#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT)
 #define RX_ENABLE_LOCKS 1
 
 #ifndef _LINUX_CODA_FS_I
diff --git a/src/rx/rx_prototypes.h b/src/rx/rx_prototypes.h
index 823b022324..303a58e4e6 100644
--- a/src/rx/rx_prototypes.h
+++ b/src/rx/rx_prototypes.h
@@ -354,7 +354,7 @@ extern void osi_StopListener(void);
 
 
 /* ARCH/rx_kmutex.c */
-#ifdef CONFIG_SMP
+#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT)
 extern void afs_mutex_init(afs_kmutex_t * l);
 extern void afs_mutex_enter(afs_kmutex_t * l);
 extern int afs_mutex_tryenter(afs_kmutex_t * l);