diff --git a/src/clock.c b/src/clock.c
index 1256847..4d52dfb 100644
--- a/src/clock.c
+++ b/src/clock.c
@@ -7,12 +7,12 @@
 #define UNUSED
 #endif
 
-static void uc_timeofday_now(struct UCoreClock *clock UNUSED, struct timeval *tv)
+static void uc_timeofday_now(struct UCoreClock *uclock UNUSED, struct timeval *tv)
 {
     gettimeofday(tv, NULL);
 }
 
-static void uc_time_now(struct UCoreClock *clock UNUSED, struct timeval *tv)
+static void uc_time_now(struct UCoreClock *uclock UNUSED, struct timeval *tv)
 {
     tv->tv_sec = time(NULL);
     tv->tv_usec = 0;