diff --git a/app/server/appsmith-plugins/mongoPlugin/src/main/java/com/external/plugins/utils/DatasourceUtils.java b/app/server/appsmith-plugins/mongoPlugin/src/main/java/com/external/plugins/utils/DatasourceUtils.java
index 9f7644f8b9..22447bd93d 100644
--- a/app/server/appsmith-plugins/mongoPlugin/src/main/java/com/external/plugins/utils/DatasourceUtils.java
+++ b/app/server/appsmith-plugins/mongoPlugin/src/main/java/com/external/plugins/utils/DatasourceUtils.java
@@ -9,6 +9,7 @@ import com.appsmith.external.models.Endpoint;
 import com.appsmith.external.models.Property;
 import com.appsmith.external.models.SSLDetails;
 import com.external.plugins.exceptions.MongoPluginErrorMessages;
+import org.springframework.util.LinkedCaseInsensitiveMap;
 import org.springframework.util.StringUtils;
 
 import java.util.ArrayList;
@@ -131,23 +132,23 @@ public class DatasourceUtils {
     }
 
     private static String buildURITail(String tailInfo) {
-        Map<String, String> optionsMap = new HashMap<>();
-
+        // case-insensitive match and preserves order of keys, hence the params ordering in the url remains unchanged
+        Map<String, String> optionsMap = new LinkedCaseInsensitiveMap<>();
         for (final String part : tailInfo.split("[&;]")) {
             if (part.isEmpty()) {
                 continue;
             }
             int idx = part.indexOf('=');
             if (idx >= 0) {
-                String key = part.substring(0, idx).toLowerCase();
+                String key = part.substring(0, idx);
                 String value = part.substring(idx + 1);
                 optionsMap.put(key, value);
             } else {
-                optionsMap.put(part.toLowerCase(), "");
+                optionsMap.put(part, "");
             }
         }
         optionsMap.putIfAbsent("authsource", "admin");
-        optionsMap.put("minpoolsize", "0");
+        optionsMap.putIfAbsent("minpoolsize", "0");
         return optionsMap.entrySet().stream()
                 .map(entry -> {
                     if (StringUtils.hasLength(entry.getValue())) {
diff --git a/app/server/appsmith-plugins/mongoPlugin/src/test/java/com/external/plugins/utils/DatasourceUtilsTest.java b/app/server/appsmith-plugins/mongoPlugin/src/test/java/com/external/plugins/utils/DatasourceUtilsTest.java
index 3516815e2a..a3aeb2b92c 100644
--- a/app/server/appsmith-plugins/mongoPlugin/src/test/java/com/external/plugins/utils/DatasourceUtilsTest.java
+++ b/app/server/appsmith-plugins/mongoPlugin/src/test/java/com/external/plugins/utils/DatasourceUtilsTest.java
@@ -45,7 +45,22 @@ public class DatasourceUtilsTest {
     public void testBuildClientURI_withUserInfoAndAuthSource() {
 
         final String testUri = "mongodb://user:pass@host:port/db?param&authSource=notAdmin";
-        final String resultUri = "mongodb://user:newPass@host:port/db?param&authsource=notAdmin&minpoolsize=0";
+        final String resultUri = "mongodb://user:newPass@host:port/db?param&authSource=notAdmin&minpoolsize=0";
+
+        DatasourceConfiguration datasourceConfiguration = new DatasourceConfiguration();
+        final DBAuth dbAuth = new DBAuth();
+        dbAuth.setPassword("newPass");
+        datasourceConfiguration.setAuthentication(dbAuth);
+        datasourceConfiguration.setProperties(List.of(new Property("0", "Yes"), new Property("1", testUri)));
+        final String clientURI = buildClientURI(datasourceConfiguration);
+        assertEquals(resultUri, clientURI);
+    }
+
+    @Test
+    public void testBuildClientURI_withUpperCaseCharacters_CaseRemainsUnchanged() {
+
+        final String testUri = "mongodb://user:pass@host:port/db?Param&authSource=notAdmin";
+        final String resultUri = "mongodb://user:newPass@host:port/db?Param&authSource=notAdmin&minpoolsize=0";
 
         DatasourceConfiguration datasourceConfiguration = new DatasourceConfiguration();
         final DBAuth dbAuth = new DBAuth();