diff --git a/pkg/scalers/aws/aws_sigv4.go b/pkg/scalers/aws/aws_sigv4.go
index 9d68461843b..4f6c75a161d 100644
--- a/pkg/scalers/aws/aws_sigv4.go
+++ b/pkg/scalers/aws/aws_sigv4.go
@@ -75,6 +75,12 @@ func (rt *roundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
 func parseAwsAMPMetadata(config *scalersconfig.ScalerConfig) (*awsConfigMetadata, error) {
 	meta := awsConfigMetadata{}
 
+	if val, ok := config.TriggerMetadata["awsRegion"]; ok && val != "" {
+		meta.awsRegion = val
+	} else {
+		return nil, ErrAwsAMPNoAwsRegion
+	}
+
 	auth, err := GetAwsAuthorization(config.TriggerUniqueKey, config.PodIdentity, config.TriggerMetadata, config.AuthParams, config.ResolvedEnv)
 	if err != nil {
 		return nil, err
diff --git a/tests/scalers/aws/aws_managed_prometheus/aws_managed_prometheus_test.go b/tests/scalers/aws/aws_managed_prometheus/aws_managed_prometheus_test.go
index 60bfc396929..ebc03850d80 100644
--- a/tests/scalers/aws/aws_managed_prometheus/aws_managed_prometheus_test.go
+++ b/tests/scalers/aws/aws_managed_prometheus/aws_managed_prometheus_test.go
@@ -52,7 +52,7 @@ data:
 	triggerAuthenticationTemplate = `apiVersion: keda.sh/v1alpha1
 kind: TriggerAuthentication
 metadata:
-  name: keda-trigger-auth-aws-credentials
+  name: keda-trigger-auth-aws-credentials-acc
   namespace: {{.TestNamespace}}
 spec:
   secretTargetRef:
@@ -99,9 +99,11 @@ metadata:
     app: {{.DeploymentName}}
 spec:
   scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
     name: {{.DeploymentName}}
-  maxReplicaCount: 2
-  minReplicaCount: 0
+  maxReplicaCount: 30
+  minReplicaCount: 1
   cooldownPeriod: 1
   advanced:
     horizontalPodAutoscalerConfig:
@@ -111,9 +113,10 @@ spec:
   triggers:
     - type: prometheus
       authenticationRef:
-        name: keda-trigger-auth-aws-credentials
+        name: keda-trigger-auth-aws-credentials-acc
       metadata:
         awsRegion: {{.AwsRegion}}
+        metricName: s0-prometheus
         serverAddress: "https://aps-workspaces.{{.AwsRegion}}.amazonaws.com/workspaces/{{.WorkspaceID}}"
         query: "vector(100)"
         threshold: "50.0"
@@ -146,10 +149,9 @@ func TestScaler(t *testing.T) {
 
 	data, templates := getTemplateData()
 	CreateKubernetesResources(t, kc, testNamespace, data, templates)
-	t.Log(secretTemplate)
 	t.Log("--- assert ---")
 	expectedReplicaCountNumber := 2 // as mentioned above, as the AMP returns 100 and the threshold set to 50, the expected replica count is 100 / 50 = 2
-	assert.Truef(t, WaitForDeploymentReplicaReadyCount(t, kc, deploymentName, testNamespace, 0, 60, 1),
+	assert.Truef(t, WaitForDeploymentReplicaReadyCount(t, kc, deploymentName, testNamespace, expectedReplicaCountNumber, 60, 1),
 		"replica count should be %d after a minute", expectedReplicaCountNumber)
 
 	t.Log("--- cleaning up ---")
@@ -173,8 +175,9 @@ func getTemplateData() (templateData, []Template) {
 			ScaledObjectName:   scaledObjectName,
 			WorkspaceID:        workspaceID,
 		}, []Template{
-			{Name: "deploymentTemplate", Config: deploymentTemplate},
+			{Name: "secretTemplate", Config: secretTemplate},
 			{Name: "triggerAuthenticationTemplate", Config: triggerAuthenticationTemplate},
+			{Name: "deploymentTemplate", Config: deploymentTemplate},
 			{Name: "scaledObjectTemplate", Config: scaledObjectTemplate},
 		}
 }
diff --git a/tests/scalers/aws/aws_managed_prometheus_pod_identity/aws_managed_prometheus_pod_identity_test.go b/tests/scalers/aws/aws_managed_prometheus_pod_identity/aws_managed_prometheus_pod_identity_test.go
index b2b0cc30bd3..5bbd1a7f177 100644
--- a/tests/scalers/aws/aws_managed_prometheus_pod_identity/aws_managed_prometheus_pod_identity_test.go
+++ b/tests/scalers/aws/aws_managed_prometheus_pod_identity/aws_managed_prometheus_pod_identity_test.go
@@ -134,7 +134,7 @@ func TestScaler(t *testing.T) {
 
 	t.Log("--- assert ---")
 	expectedReplicaCountNumber := 2 // as mentioned above, as the AMP returns 100 and the threshold set to 50, the expected replica count is 100 / 50 = 2
-	assert.Truef(t, WaitForDeploymentReplicaReadyCount(t, kc, deploymentName, testNamespace, 0, 60, 1),
+	assert.Truef(t, WaitForDeploymentReplicaReadyCount(t, kc, deploymentName, testNamespace, expectedReplicaCountNumber, 60, 1),
 		"replica count should be %d after a minute", expectedReplicaCountNumber)
 
 	t.Log("--- cleaning up ---")