diff --git a/.changelog/3538.txt b/.changelog/3538.txt
new file mode 100644
index 00000000000..67d3081b6f9
--- /dev/null
+++ b/.changelog/3538.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+compute: Fixed `google_compute_interconnect_attachment` `edge_availability_domain` diff when the field is unspecified
+```
diff --git a/google/resource_compute_interconnect_attachment.go b/google/resource_compute_interconnect_attachment.go
index df3fa4ac566..ef991c7bce2 100644
--- a/google/resource_compute_interconnect_attachment.go
+++ b/google/resource_compute_interconnect_attachment.go
@@ -126,6 +126,7 @@ Google will randomly select an unused /29 from all of link-local space.`,
 			},
 			"edge_availability_domain": {
 				Type:     schema.TypeString,
+				Computed: true,
 				Optional: true,
 				ForceNew: true,
 				Description: `Desired availability domain for the attachment. Only available for type