diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index 126ca77..53fe94c 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -611,7 +611,7 @@
 extern unsigned rxrpc_debug;
 
 #define dbgprintk(FMT,...) \
-	printk("[%x%-6.6s] "FMT"\n", smp_processor_id(), current->comm ,##__VA_ARGS__)
+	printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__)
 
 /* make sure we maintain the format strings, even when debugging is disabled */
 static inline __attribute__((format(printf,1,2)))