diff --git a/src/log.c b/src/log.c
index f8b08ee..c966930 100644
--- a/src/log.c
+++ b/src/log.c
@@ -1,7 +1,6 @@
 #include <stdio.h>
 #include <stdarg.h>
-
-#include <sys/time.h>
+#include <time.h>
 
 #include "log.h"
 
@@ -24,14 +23,14 @@ void rk65c02_loglevel_set(uint8_t l)
 void rk65c02_log(uint8_t l, const char* fmt, ...)
 {
 	va_list args;
-	struct timeval t;
-	
-	gettimeofday(&t, NULL);
+	struct timespec t;
 
 	if (l > level)
 		return;
 
-	fprintf(stderr, "%ld %s:\t", (t.tv_sec * 1000000 + t.tv_usec),
+	clock_gettime(CLOCK_REALTIME, &t);
+
+	fprintf(stderr, "%ld.%ld %s:\t", t.tv_sec, t.tv_nsec,
 	    level_str[l]);
 
 	va_start(args, fmt);