diff --git a/src/main/java/ai/asserts/aws/exporter/ResourceRelationExporter.java b/src/main/java/ai/asserts/aws/exporter/ResourceRelationExporter.java
index 5d602d7f..5c8ce0b2 100644
--- a/src/main/java/ai/asserts/aws/exporter/ResourceRelationExporter.java
+++ b/src/main/java/ai/asserts/aws/exporter/ResourceRelationExporter.java
@@ -16,6 +16,8 @@
 import java.util.SortedMap;
 import java.util.TreeMap;
 
+import static ai.asserts.aws.MetricNameUtil.SITE;
+
 @Component
 @Slf4j
 public class ResourceRelationExporter extends Collector implements MetricProvider {
@@ -62,6 +64,8 @@ public void update() {
             relations.forEach(relation -> {
                 String name = "aws_resource_relation";
                 SortedMap<String, String> labels = new TreeMap<>();
+                // Default site to from resource's region
+                labels.put(SITE, relation.getFrom().getRegion());
                 relation.getFrom().addLabels(labels, "from");
                 relation.getTo().addLabels(labels, "to");
                 labels.put("rel_name", relation.getName());
diff --git a/src/test/java/ai/asserts/aws/exporter/ResourceRelationExporterTest.java b/src/test/java/ai/asserts/aws/exporter/ResourceRelationExporterTest.java
index e8c92e5a..42991f53 100644
--- a/src/test/java/ai/asserts/aws/exporter/ResourceRelationExporterTest.java
+++ b/src/test/java/ai/asserts/aws/exporter/ResourceRelationExporterTest.java
@@ -56,6 +56,7 @@ public void setup() {
 
     @Test
     public void update() {
+        expect(fromResource.getRegion()).andReturn("us-west-2").anyTimes();
         expect(lbToECSRoutingBuilder.getRouting()).andReturn(ImmutableSet.of(ResourceRelation.builder()
                 .from(fromResource)
                 .to(toResource)
@@ -87,19 +88,29 @@ public void update() {
         ));
 
         expect(sampleBuilder.buildSingleSample(
-                "aws_resource_relation", ImmutableSortedMap.of("rel_name", "name1"), 1.0D))
+                "aws_resource_relation", ImmutableSortedMap.of(
+                        "asserts_site", "us-west-2",
+                        "rel_name", "name1"), 1.0D))
                 .andReturn(Optional.of(sample));
         expect(sampleBuilder.buildSingleSample(
-                "aws_resource_relation", ImmutableSortedMap.of("rel_name", "name2"), 1.0D))
+                "aws_resource_relation", ImmutableSortedMap.of(
+                        "asserts_site", "us-west-2",
+                        "rel_name", "name2"), 1.0D))
                 .andReturn(Optional.of(sample));
         expect(sampleBuilder.buildSingleSample(
-                "aws_resource_relation", ImmutableSortedMap.of("rel_name", "name3"), 1.0D))
+                "aws_resource_relation", ImmutableSortedMap.of(
+                        "asserts_site", "us-west-2",
+                        "rel_name", "name3"), 1.0D))
                 .andReturn(Optional.of(sample));
         expect(sampleBuilder.buildSingleSample(
-                "aws_resource_relation", ImmutableSortedMap.of("rel_name", "name4"), 1.0D))
+                "aws_resource_relation", ImmutableSortedMap.of(
+                        "asserts_site", "us-west-2",
+                        "rel_name", "name4"), 1.0D))
                 .andReturn(Optional.of(sample));
         expect(sampleBuilder.buildSingleSample(
-                "aws_resource_relation", ImmutableSortedMap.of("rel_name", "name5"), 1.0D))
+                "aws_resource_relation", ImmutableSortedMap.of(
+                        "asserts_site", "us-west-2",
+                        "rel_name", "name5"), 1.0D))
                 .andReturn(Optional.of(sample));
         expect(sampleBuilder.buildFamily(ImmutableList.of(sample, sample, sample, sample, sample)))
                 .andReturn(Optional.of(familySamples));