diff --git a/syncoid b/syncoid
index b57aa43..f5715a2 100755
--- a/syncoid
+++ b/syncoid
@@ -837,15 +837,16 @@ sub syncdataset {
 	}
 	if (defined $args{'no-sync-snap'}) {
 		if (defined $args{'create-bookmark'}) {
-			my $ret = createbookmark($sourcehost, $sourcefs, $newsyncsnap, $newsyncsnap);
+			my %existingbookmarks = getbookmarks($sourcehost,$sourcefs,$sourceisroot);
+			my $guid = $snaps{'source'}{$newsyncsnap}{'guid'};
+			my $ret = createbookmark($sourcehost, $sourcefs, $newsyncsnap, $newsyncsnap, $guid, %existingbookmarks);
 			$ret == 0 or do {
 				# fallback: assume naming conflict and try again with guid based suffix
-				my $guid = $snaps{'source'}{$newsyncsnap}{'guid'};
-				$guid = substr($guid, 0, 6);
+				my $suffix = substr($guid, 0, 6);
 
-				writelog('INFO', "bookmark creation failed, retrying with guid based suffix ($guid)...");
+				writelog('INFO', "bookmark creation failed, retrying with guid based suffix ($suffix)...");
 
-				my $ret = createbookmark($sourcehost, $sourcefs, $newsyncsnap, "$newsyncsnap$guid");
+				my $ret = createbookmark($sourcehost, $sourcefs, $newsyncsnap, "$newsyncsnap$suffix", $guid, %existingbookmarks);
 				$ret == 0 or do {
 					if ($exitcode < 2) { $exitcode = 2; }
 					return 0;
@@ -1066,7 +1067,12 @@ sub syncbookmark {
 } # end syncbookmark
 
 sub createbookmark {
-	my ($sourcehost, $sourcefs, $snapname, $bookmark) = @_;
+	my ($sourcehost, $sourcefs, $snapname, $bookmark, $guid, %existingbookmarks) = @_;
+
+	if (defined $existingbookmarks{$guid} && $existingbookmarks{$guid}{'name'} eq $bookmark) {
+		writelog('INFO', "bookmark already exists, skipping creation");
+		return 0;
+	}
 
 	my $sourcefsescaped = escapeshellparam($sourcefs);
 	my $bookmarkescaped = escapeshellparam($bookmark);
diff --git a/tests/syncoid/12_bookmark_check_guid_on_existing/run.sh b/tests/syncoid/12_bookmark_check_guid_on_existing/run.sh
new file mode 100755
index 0000000..f25d72e
--- /dev/null
+++ b/tests/syncoid/12_bookmark_check_guid_on_existing/run.sh
@@ -0,0 +1,93 @@
+#!/bin/bash
+
+# test if guid of existing bookmark matches new guid
+
+set -x
+set -e
+
+. ../../common/lib.sh
+
+POOL_IMAGE="/tmp/syncoid-test-12.zpool"
+MOUNT_TARGET="/tmp/syncoid-test-12.mount"
+POOL_SIZE="1000M"
+POOL_NAME="syncoid-test-12"
+
+truncate -s "${POOL_SIZE}" "${POOL_IMAGE}"
+
+zpool create -m "${MOUNT_TARGET}" -f "${POOL_NAME}" "${POOL_IMAGE}"
+
+function cleanUp {
+  zpool export "${POOL_NAME}"
+}
+
+function getGuid {
+  zfs get -H guid "$1" | awk '{print $3}'
+}
+
+# export pool in any case
+trap cleanUp EXIT
+
+zfs create "${POOL_NAME}/a"
+zfs snapshot "${POOL_NAME}/a@s0"
+
+# This fully replicates a to b
+../../../syncoid --debug --no-sync-snap --no-rollback --create-bookmark "${POOL_NAME}"/a "${POOL_NAME}"/b
+
+# This fully replicates a to c
+../../../syncoid --debug --no-sync-snap --no-rollback --create-bookmark "${POOL_NAME}"/a "${POOL_NAME}"/c
+
+bookmark_guid=$(getGuid "${POOL_NAME}/a#s0")
+snap_a_guid=$(getGuid "${POOL_NAME}/a@s0")
+snap_b_guid=$(getGuid "${POOL_NAME}/b@s0")
+snap_c_guid=$(getGuid "${POOL_NAME}/c@s0")
+
+# Bookmark guid should equal guid of all snapshots
+if [ "${bookmark_guid}" != "${snap_a_guid}" ] || \
+   [ "${bookmark_guid}" != "${snap_b_guid}" ] || \
+   [ "${bookmark_guid}" != "${snap_c_guid}" ]; then
+  exit 1
+fi
+
+bookmark_suffix="${bookmark_guid:0:6}"
+fallback_bookmark="${POOL_NAME}/a#s0${bookmark_suffix}"
+
+# Fallback bookmark should not exist
+if zfs get guid "${fallback_bookmark}"; then
+  exit 1
+fi
+
+zfs snapshot "${POOL_NAME}/a@s1"
+
+# Create bookmark so syncoid is forced to create fallback bookmark
+zfs bookmark "${POOL_NAME}/a@s0" "${POOL_NAME}/a#s1"
+
+# This incrementally replicates from a@s0 to a@s1 and should create a
+# bookmark with fallback suffix
+../../../syncoid --debug --no-sync-snap --no-rollback --create-bookmark "${POOL_NAME}"/a "${POOL_NAME}"/b
+
+snap_guid=$(getGuid "${POOL_NAME}/a@s1")
+bookmark_suffix="${snap_guid:0:6}"
+fallback_bookmark="${POOL_NAME}/a#s1${bookmark_suffix}"
+
+# Fallback bookmark guid should equal guid of snapshot
+if [ "$(getGuid "${fallback_bookmark}")" != "${snap_guid}" ]; then
+  exit 1
+fi
+
+zfs snapshot "${POOL_NAME}/a@s2"
+
+snap_guid=$(getGuid "${POOL_NAME}/a@s2")
+bookmark_suffix="${snap_guid:0:6}"
+fallback_bookmark="${POOL_NAME}/a#s2${bookmark_suffix}"
+
+# Create bookmark and fallback bookmark so syncoid should fail
+zfs bookmark "${POOL_NAME}/a@s0" "${POOL_NAME}/a#s2"
+zfs bookmark "${POOL_NAME}/a@s0" "${fallback_bookmark}"
+
+# This incrementally replicates from a@s1 to a@s2 and should fail to create a
+# bookmark with fallback suffix
+if ../../../syncoid --debug --no-sync-snap --no-rollback --create-bookmark "${POOL_NAME}"/a "${POOL_NAME}"/b; then
+  exit 1
+fi
+
+exit 0