diff --git a/src/time/clock_gettime.c b/src/time/clock_gettime.c
index c27c9e9e4ed0b77636e05532778c0bf0782f3268..bb977e28a4050b761a0d08d8978f730f6b3f6f6a 100644
--- a/src/time/clock_gettime.c
+++ b/src/time/clock_gettime.c
@@ -5,7 +5,7 @@
 #include "libc.h"
 
 int __vdso_clock_gettime(clockid_t, struct timespec *) __attribute__((weak));
-static int (*cgt)(clockid_t, struct timespec *) = __vdso_clock_gettime;
+static int (*const cgt)(clockid_t, struct timespec *) = __vdso_clock_gettime;
 
 int __clock_gettime(clockid_t clk, struct timespec *ts)
 {