diff --git a/src/udev/udev-rules.c b/src/udev/udev-rules.c
index 9d831a6004..5e7d8d390e 100644
--- a/src/udev/udev-rules.c
+++ b/src/udev/udev-rules.c
@@ -1014,6 +1014,9 @@ static int parse_token(UdevRules *rules, const char *key, char *attr, UdevRuleOp
                         return log_token_invalid_attr(rules, key);
                 if (op != OP_ASSIGN)
                         return log_token_invalid_op(rules, key);
+                if (FLAGS_SET(rule_line->type, LINE_HAS_LABEL))
+                        log_token_warning(rules, "Contains multiple LABEL keys, ignoring LABEL=\"%s\".",
+                                          rule_line->label);
 
                 rule_line->label = value;
                 SET_FLAG(rule_line->type, LINE_HAS_LABEL, true);
diff --git a/test/units/testsuite-17.11.sh b/test/units/testsuite-17.11.sh
index 9a404781e7..363040c28c 100755
--- a/test/units/testsuite-17.11.sh
+++ b/test/units/testsuite-17.11.sh
@@ -262,6 +262,19 @@ ${rules}: udev rules check failed
 EOF
 assert_1 "${rules}"
 
+cat >"${rules}" <<'EOF'
+GOTO="a"
+LABEL="a", LABEL="b"
+EOF
+cat >"${exp}" <<EOF
+${rules}:2 Contains multiple LABEL keys, ignoring LABEL="a".
+${rules}:1 GOTO="a" has no matching label, ignoring
+${rules}:1 The line takes no effect any more, dropping
+${rules}:2 LABEL="b" is unused.
+${rules}: udev rules check failed
+EOF
+assert_1 "${rules}"
+
 # udevadm verify --root
 sed "s|sample-[0-9]*.rules|${workdir}/${rules_dir}/&|" sample-*.exp >"${workdir}/${exp}"
 cd -