diff --git a/retrieval/target.go b/retrieval/target.go
index 8d4e063b1d..68e783e97e 100644
--- a/retrieval/target.go
+++ b/retrieval/target.go
@@ -164,6 +164,8 @@ type Target struct {
 	metaLabels model.LabelSet
 	// Any base labels that are added to this target and its metrics.
 	baseLabels model.LabelSet
+	// Internal labels, such as scheme.
+	internalLabels model.LabelSet
 	// What is the deadline for the HTTP or HTTPS against this endpoint.
 	deadline time.Duration
 	// The time between two scrapes.
@@ -211,6 +213,11 @@ func (t *Target) Update(cfg *config.ScrapeConfig, baseLabels, metaLabels model.L
 	t.url.Scheme = string(baseLabels[model.SchemeLabel])
 	t.url.Path = string(baseLabels[model.MetricsPathLabel])
 
+	t.internalLabels = model.LabelSet{}
+	t.internalLabels[model.SchemeLabel] = baseLabels[model.SchemeLabel]
+	t.internalLabels[model.MetricsPathLabel] = baseLabels[model.MetricsPathLabel]
+	t.internalLabels[model.AddressLabel] = model.LabelValue(t.url.Host)
+
 	params := url.Values{}
 
 	for k, v := range cfg.Params {
@@ -224,6 +231,7 @@ func (t *Target) Update(cfg *config.ScrapeConfig, baseLabels, metaLabels model.L
 			} else {
 				params[string(k[len(model.ParamLabelPrefix):])] = []string{string(v)}
 			}
+			t.internalLabels[model.ParamLabelPrefix+k[len(model.ParamLabelPrefix):]] = v
 		}
 	}
 	t.url.RawQuery = params.Encode()
@@ -561,13 +569,13 @@ func (t *Target) InstanceIdentifier() string {
 func (t *Target) fullLabels() model.LabelSet {
 	t.RLock()
 	defer t.RUnlock()
-	lset := make(model.LabelSet, len(t.baseLabels)+2)
+	lset := make(model.LabelSet, len(t.baseLabels)+len(t.internalLabels))
 	for ln, lv := range t.baseLabels {
 		lset[ln] = lv
 	}
-	lset[model.MetricsPathLabel] = model.LabelValue(t.url.Path)
-	lset[model.AddressLabel] = model.LabelValue(t.url.Host)
-	lset[model.SchemeLabel] = model.LabelValue(t.url.Scheme)
+	for k, v := range t.internalLabels {
+		lset[k] = v
+	}
 	return lset
 }
 
diff --git a/retrieval/targetmanager_test.go b/retrieval/targetmanager_test.go
index f098fafd44..aa0cb188a9 100644
--- a/retrieval/targetmanager_test.go
+++ b/retrieval/targetmanager_test.go
@@ -287,34 +287,44 @@ func TestTargetManagerConfigUpdate(t *testing.T) {
 			scrapeConfigs: []*config.ScrapeConfig{testJob1},
 			expected: map[string][]model.LabelSet{
 				"test_job1:static:0:0": {
-					{model.JobLabel: "test_job1", model.InstanceLabel: "example.org:80", "testParam": "paramValue"},
-					{model.JobLabel: "test_job1", model.InstanceLabel: "example.com:80", "testParam": "paramValue"},
+					{model.JobLabel: "test_job1", model.InstanceLabel: "example.org:80", "testParam": "paramValue",
+						model.SchemeLabel: "", model.MetricsPathLabel: "", model.AddressLabel: "example.org:80", model.ParamLabelPrefix + "testParam": "paramValue"},
+					{model.JobLabel: "test_job1", model.InstanceLabel: "example.com:80", "testParam": "paramValue",
+						model.SchemeLabel: "", model.MetricsPathLabel: "", model.AddressLabel: "example.com:80", model.ParamLabelPrefix + "testParam": "paramValue"},
 				},
 			},
 		}, {
 			scrapeConfigs: []*config.ScrapeConfig{testJob1},
 			expected: map[string][]model.LabelSet{
 				"test_job1:static:0:0": {
-					{model.JobLabel: "test_job1", model.InstanceLabel: "example.org:80", "testParam": "paramValue"},
-					{model.JobLabel: "test_job1", model.InstanceLabel: "example.com:80", "testParam": "paramValue"},
+					{model.JobLabel: "test_job1", model.InstanceLabel: "example.org:80", "testParam": "paramValue",
+						model.SchemeLabel: "", model.MetricsPathLabel: "", model.AddressLabel: "example.org:80", model.ParamLabelPrefix + "testParam": "paramValue"},
+					{model.JobLabel: "test_job1", model.InstanceLabel: "example.com:80", "testParam": "paramValue",
+						model.SchemeLabel: "", model.MetricsPathLabel: "", model.AddressLabel: "example.com:80", model.ParamLabelPrefix + "testParam": "paramValue"},
 				},
 			},
 		}, {
 			scrapeConfigs: []*config.ScrapeConfig{testJob1, testJob2},
 			expected: map[string][]model.LabelSet{
 				"test_job1:static:0:0": {
-					{model.JobLabel: "test_job1", model.InstanceLabel: "example.org:80", "testParam": "paramValue"},
-					{model.JobLabel: "test_job1", model.InstanceLabel: "example.com:80", "testParam": "paramValue"},
+					{model.JobLabel: "test_job1", model.InstanceLabel: "example.org:80", "testParam": "paramValue",
+						model.SchemeLabel: "", model.MetricsPathLabel: "", model.AddressLabel: "example.org:80", model.ParamLabelPrefix + "testParam": "paramValue"},
+					{model.JobLabel: "test_job1", model.InstanceLabel: "example.com:80", "testParam": "paramValue",
+						model.SchemeLabel: "", model.MetricsPathLabel: "", model.AddressLabel: "example.com:80", model.ParamLabelPrefix + "testParam": "paramValue"},
 				},
 				"test_job2:static:0:0": {
-					{model.JobLabel: "test_job2", model.InstanceLabel: "example.org:8080", "foo": "bar", "new": "ox-ba"},
-					{model.JobLabel: "test_job2", model.InstanceLabel: "example.com:8081", "foo": "bar", "new": "ox-ba"},
+					{model.JobLabel: "test_job2", model.InstanceLabel: "example.org:8080", "foo": "bar", "new": "ox-ba",
+						model.SchemeLabel: "", model.MetricsPathLabel: "", model.AddressLabel: "example.org:8080"},
+					{model.JobLabel: "test_job2", model.InstanceLabel: "example.com:8081", "foo": "bar", "new": "ox-ba",
+						model.SchemeLabel: "", model.MetricsPathLabel: "", model.AddressLabel: "example.com:8081"},
 				},
 				"test_job2:static:0:1": {
-					{model.JobLabel: "test_job2", model.InstanceLabel: "foo.com:1234"},
+					{model.JobLabel: "test_job2", model.InstanceLabel: "foo.com:1234",
+						model.SchemeLabel: "", model.MetricsPathLabel: "", model.AddressLabel: "foo.com:1234"},
 				},
 				"test_job2:static:0:2": {
-					{model.JobLabel: "test_job2", model.InstanceLabel: "fixed"},
+					{model.JobLabel: "test_job2", model.InstanceLabel: "fixed",
+						model.SchemeLabel: "", model.MetricsPathLabel: "", model.AddressLabel: "foo.com:1235"},
 				},
 			},
 		}, {
@@ -324,14 +334,18 @@ func TestTargetManagerConfigUpdate(t *testing.T) {
 			scrapeConfigs: []*config.ScrapeConfig{testJob2},
 			expected: map[string][]model.LabelSet{
 				"test_job2:static:0:0": {
-					{model.JobLabel: "test_job2", model.InstanceLabel: "example.org:8080", "foo": "bar", "new": "ox-ba"},
-					{model.JobLabel: "test_job2", model.InstanceLabel: "example.com:8081", "foo": "bar", "new": "ox-ba"},
+					{model.JobLabel: "test_job2", model.InstanceLabel: "example.org:8080", "foo": "bar", "new": "ox-ba",
+						model.SchemeLabel: "", model.MetricsPathLabel: "", model.AddressLabel: "example.org:8080"},
+					{model.JobLabel: "test_job2", model.InstanceLabel: "example.com:8081", "foo": "bar", "new": "ox-ba",
+						model.SchemeLabel: "", model.MetricsPathLabel: "", model.AddressLabel: "example.com:8081"},
 				},
 				"test_job2:static:0:1": {
-					{model.JobLabel: "test_job2", model.InstanceLabel: "foo.com:1234"},
+					{model.JobLabel: "test_job2", model.InstanceLabel: "foo.com:1234",
+						model.SchemeLabel: "", model.MetricsPathLabel: "", model.AddressLabel: "foo.com:1234"},
 				},
 				"test_job2:static:0:2": {
-					{model.JobLabel: "test_job2", model.InstanceLabel: "fixed"},
+					{model.JobLabel: "test_job2", model.InstanceLabel: "fixed",
+						model.SchemeLabel: "", model.MetricsPathLabel: "", model.AddressLabel: "foo.com:1235"},
 				},
 			},
 		},
@@ -363,7 +377,7 @@ func TestTargetManagerConfigUpdate(t *testing.T) {
 			for _, expt := range expTargets {
 				found := false
 				for _, actt := range actTargets {
-					if reflect.DeepEqual(expt, actt.BaseLabels()) {
+					if reflect.DeepEqual(expt, actt.fullLabels()) {
 						found = true
 						break
 					}