diff --git a/app/src/main/java/com/aws/amazonlocation/utils/Constants.kt b/app/src/main/java/com/aws/amazonlocation/utils/Constants.kt
index 7415cdf1..c9c93f96 100644
--- a/app/src/main/java/com/aws/amazonlocation/utils/Constants.kt
+++ b/app/src/main/java/com/aws/amazonlocation/utils/Constants.kt
@@ -152,6 +152,7 @@ const val LAT_LNG_REG_EXP = "([+-]?\\d+\\.?\\d+)\\s*,\\s*([+-]?\\d+\\.?\\d+)"
 const val GEOFENCE_NAME_REG_EXP = "^[-._\\p{L}\\p{N}]+\$"
 const val userPoolIdPattern = "[\\w-]+_[0-9a-zA-Z]+"
 const val userPoolClientId = "[\\w+]+"
+const val regionPattern = "^[a-zA-Z-]+-\\d+$"
 
 const val LOCATION_AWS_PREFIX = "location.aws.com.demo."
 const val LOCATION_MAPS_PREFIX = "maps."
diff --git a/app/src/main/java/com/aws/amazonlocation/utils/GeneralUtils.kt b/app/src/main/java/com/aws/amazonlocation/utils/GeneralUtils.kt
index 963b59f7..2315087c 100644
--- a/app/src/main/java/com/aws/amazonlocation/utils/GeneralUtils.kt
+++ b/app/src/main/java/com/aws/amazonlocation/utils/GeneralUtils.kt
@@ -566,16 +566,22 @@ fun Context.isInternetAvailable(): Boolean {
 }
 
 fun validateIdentityPoolId(mIdentityPoolId: String?, region: String?): Boolean {
-    val cognitoCredentialsProvider = CognitoCredentialsProvider(
-        mIdentityPoolId,
-        Regions.fromName(region)
-    )
+    val pattern = Pattern.compile(regionPattern)
+    val matcher = region?.let { pattern.matcher(it) }
+    if (matcher?.matches() != true) return false
     try {
+        val cognitoCredentialsProvider = CognitoCredentialsProvider(
+            mIdentityPoolId,
+            Regions.fromName(region)
+        )
         cognitoCredentialsProvider.refresh()
     } catch (exception: Exception) {
         if (exception is com.amazonaws.services.cognitoidentity.model.ResourceNotFoundException) {
             return false
         }
+        if (exception is IllegalArgumentException) {
+            return false
+        }
     }
     return true
 }