diff --git a/src/machine/m_europc.c b/src/machine/m_europc.c
index 7e08d3109..df464e73e 100644
--- a/src/machine/m_europc.c
+++ b/src/machine/m_europc.c
@@ -280,7 +280,7 @@ rtc_start(nvr_t *nvr)
     struct tm tm;
 
     /* Initialize the internal and chip times. */
-    if (enable_sync) {
+    if (enable_sync & TIME_SYNC_ENABLED) {
 	/* Use the internal clock's time. */
 	nvr_time_get(&tm);
 	rtc_time_set(nvr->regs, &tm);
diff --git a/src/machine/m_xt_t1000.c b/src/machine/m_xt_t1000.c
index 2b5d33186..97924dd5e 100644
--- a/src/machine/m_xt_t1000.c
+++ b/src/machine/m_xt_t1000.c
@@ -258,7 +258,7 @@ tc8521_start(nvr_t *nvr)
     struct tm tm;
 
     /* Initialize the internal and chip times. */
-    if (enable_sync) {
+    if (enable_sync & TIME_SYNC_ENABLED) {
 	/* Use the internal clock's time. */
 	nvr_time_get(&tm);
 	tc8521_time_set(nvr->regs, &tm);
diff --git a/src/nvr.c b/src/nvr.c
index 2037b68e9..65d8114a4 100644
--- a/src/nvr.c
+++ b/src/nvr.c
@@ -181,10 +181,13 @@ nvr_init(nvr_t *nvr)
 
     /* Initialize the internal clock as needed. */
     memset(&intclk, 0x00, sizeof(intclk));
-    if (enable_sync) {
+    if (enable_sync & TIME_SYNC_ENABLED) {
 	/* Get the current time of day, and convert to local time. */
 	(void)time(&now);
-	tm = localtime(&now);
+	if(enable_sync & TIME_SYNC_UTC)
+		tm = gmtime(&now);
+	else
+		tm = localtime(&now);
 
 	/* Set the internal clock. */
 	nvr_time_set(tm);
diff --git a/src/nvr.h b/src/nvr.h
index 11321fd6a..7928a4a7c 100644
--- a/src/nvr.h
+++ b/src/nvr.h
@@ -55,6 +55,11 @@
 #define RTC_DCB(x)      ((((x) & 0xf0) >> 4) * 10 + ((x) & 0x0f))
 #define RTC_BCDINC(x,y)	RTC_BCD(RTC_DCB(x) + y)
 
+/* Time sync options */
+#define TIME_SYNC_DISABLED	0
+#define TIME_SYNC_ENABLED	1
+#define TIME_SYNC_UTC		2
+
 
 /* Define a generic RTC/NVRAM device. */
 typedef struct _nvr_ {
diff --git a/src/nvr_at.c b/src/nvr_at.c
index e6cd8cc71..773bb5502 100644
--- a/src/nvr_at.c
+++ b/src/nvr_at.c
@@ -554,7 +554,7 @@ nvr_write(uint16_t addr, uint8_t val, void *priv)
 
 	if ((local->addr < RTC_REGA) || ((local->cent != 0xff) && (local->addr == local->cent))) {
 		if ((local->addr != 1) && (local->addr != 3) && (local->addr != 5)) {
-			if ((old != val) && !enable_sync) {
+			if ((old != val) && !(enable_sync & TIME_SYNC_ENABLED)) {
 				/* Update internal clock. */
 				time_get(nvr, &tm);
 				nvr_time_set(&tm);
@@ -630,7 +630,7 @@ nvr_start(nvr_t *nvr)
     struct tm tm;
 
     /* Initialize the internal and chip times. */
-    if (enable_sync) {
+    if (time_sync & TIME_SYNC_ENABLED) {
 	/* Use the internal clock's time. */
 	nvr_time_get(&tm);
 	time_set(nvr, &tm);
diff --git a/src/win/win_settings.c b/src/win/win_settings.c
index 16d8ea151..838450cd1 100644
--- a/src/win/win_settings.c
+++ b/src/win/win_settings.c
@@ -202,7 +202,7 @@ win_settings_init(void)
     temp_dynarec = cpu_use_dynarec;
 #endif
     temp_fpu = enable_external_fpu;
-    temp_sync = enable_sync;
+    temp_sync = enable_sync & TIME_SYNC_ENABLED;
 
     /* Video category */
     temp_gfxcard = gfxcard;
@@ -305,7 +305,7 @@ win_settings_changed(void)
     i = i || (temp_dynarec != cpu_use_dynarec);
 #endif
     i = i || (temp_fpu != enable_external_fpu);
-    i = i || (temp_sync != enable_sync);
+    i = i || (temp_sync != (enable_sync & TIME_SYNC_ENABLED));
 
     /* Video category */
     i = i || (gfxcard != temp_gfxcard);