diff --git a/openstack/compute/v2/extensions/secgroups/fixtures.go b/openstack/compute/v2/extensions/secgroups/fixtures.go
index b205678..ca76f68 100644
--- a/openstack/compute/v2/extensions/secgroups/fixtures.go
+++ b/openstack/compute/v2/extensions/secgroups/fixtures.go
@@ -151,6 +151,25 @@
 	})
 }
 
+func mockGetNumericIDGroupResponse(t *testing.T, groupID int) {
+	url := fmt.Sprintf("%s/%d", rootPath, groupID)
+	th.Mux.HandleFunc(url, func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "GET")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+
+		w.Header().Add("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+
+		fmt.Fprintf(w, `
+{
+	"security_group": {
+		"id": 12345
+	}
+}
+			`)
+	})
+}
+
 func mockDeleteGroupResponse(t *testing.T, groupID string) {
 	url := fmt.Sprintf("%s/%s", rootPath, groupID)
 	th.Mux.HandleFunc(url, func(w http.ResponseWriter, r *http.Request) {
diff --git a/openstack/compute/v2/extensions/secgroups/requests_test.go b/openstack/compute/v2/extensions/secgroups/requests_test.go
index 9f62d05..4e21d5d 100644
--- a/openstack/compute/v2/extensions/secgroups/requests_test.go
+++ b/openstack/compute/v2/extensions/secgroups/requests_test.go
@@ -162,6 +162,21 @@
 	th.AssertDeepEquals(t, expected, group)
 }
 
+func TestGetNumericID(t *testing.T) {
+	th.SetupHTTP()
+	defer th.TeardownHTTP()
+
+	numericGroupID := 12345
+
+	mockGetNumericIDGroupResponse(t, numericGroupID)
+
+	group, err := Get(client.ServiceClient(), "12345").Extract()
+	th.AssertNoErr(t, err)
+
+	expected := &SecurityGroup{ID: "12345"}
+	th.AssertDeepEquals(t, expected, group)
+}
+
 func TestDelete(t *testing.T) {
 	th.SetupHTTP()
 	defer th.TeardownHTTP()
diff --git a/openstack/compute/v2/extensions/secgroups/results.go b/openstack/compute/v2/extensions/secgroups/results.go
index 2d19fab..a360782 100644
--- a/openstack/compute/v2/extensions/secgroups/results.go
+++ b/openstack/compute/v2/extensions/secgroups/results.go
@@ -120,7 +120,7 @@
 		SecurityGroup SecurityGroup `mapstructure:"security_group"`
 	}
 
-	err := mapstructure.Decode(r.Body, &response)
+	err := mapstructure.WeakDecode(r.Body, &response)
 
 	return &response.SecurityGroup, err
 }