diff --git a/phc2sys.c b/phc2sys.c
index e51c649..24cc8d6 100644
--- a/phc2sys.c
+++ b/phc2sys.c
@@ -41,8 +41,6 @@
 #define max_ppb  512000
 #define min_ppb -512000
 
-#define PHC_READINGS 5
-
 static clockid_t clock_open(char *device)
 {
 	int fd = open(device, O_RDWR);
@@ -89,35 +87,26 @@ static void clock_step(clockid_t clkid, int64_t ns)
 
 static int read_phc(clockid_t clkid, clockid_t sysclk, int rdelay, int64_t *offset, uint64_t *ts)
 {
-	struct timespec tdst1, tdst2, tsrc;
-	int i;
-	int64_t interval, best_interval = INT64_MAX;
+	struct timespec tsrc, tdst;
 
 	if (clkid == CLOCK_INVALID) {
 		return 0;
 	}
 
-	/* Pick the quickest clkid reading. */
-	for (i = 0; i < PHC_READINGS; i++) {
-		if (clock_gettime(sysclk, &tdst1) ||
-				clock_gettime(clkid, &tsrc) ||
-				clock_gettime(sysclk, &tdst2)) {
-			perror("clock_gettime");
-			return 0;
-		}
-
-		interval = (tdst2.tv_sec - tdst1.tv_sec) * NS_PER_SEC +
-			tdst2.tv_nsec - tdst1.tv_nsec;
-
-		if (best_interval > interval) {
-			best_interval = interval;
-			*offset = (tdst1.tv_sec - tsrc.tv_sec) * NS_PER_SEC +
-				tdst1.tv_nsec - tsrc.tv_nsec +
-				interval / 2 - rdelay;
-			*ts = tdst2.tv_sec * NS_PER_SEC + tdst2.tv_nsec;
-		}
+	if (clock_gettime(clkid, &tsrc)) {
+		perror("clock_gettime");
+		return 0;
 	}
 
+	if (clock_gettime(sysclk, &tdst)) {
+		perror("clock_gettime");
+		return 0;
+	}
+
+	*offset = tdst.tv_sec * NS_PER_SEC - tsrc.tv_sec * NS_PER_SEC +
+		tdst.tv_nsec - tsrc.tv_nsec - rdelay;
+	*ts = tdst.tv_sec * NS_PER_SEC + tdst.tv_nsec;
+
 	return 1;
 }