diff --git a/app/models/manageiq/providers/kubernetes/container_manager.rb b/app/models/manageiq/providers/kubernetes/container_manager.rb
index b5a2d31d9b..500ef41047 100644
--- a/app/models/manageiq/providers/kubernetes/container_manager.rb
+++ b/app/models/manageiq/providers/kubernetes/container_manager.rb
@@ -662,8 +662,9 @@ def self.prometheus_connect(hostname, port, options)
     credentials = {:token => options[:bearer]}
     ssl_options = options[:ssl_options] || {:verify_ssl => OpenSSL::SSL::VERIFY_NONE}
 
+    http_proxy_uri = options[:http_proxy] || VMDB::Util.http_proxy_uri.to_s
     prometheus_options = {
-      :http_proxy_uri => options[:http_proxy] || VMDB::Util.http_proxy_uri.to_s,
+      :http_proxy_uri => http_proxy_uri.presence,
       :verify_ssl     => ssl_options[:verify_ssl],
       :ssl_cert_store => ssl_options[:ca_file],
     }
diff --git a/app/models/manageiq/providers/kubernetes/container_manager/metrics_capture/prometheus_client_mixin.rb b/app/models/manageiq/providers/kubernetes/container_manager/metrics_capture/prometheus_client_mixin.rb
index 76989becab..249f5c27de 100644
--- a/app/models/manageiq/providers/kubernetes/container_manager/metrics_capture/prometheus_client_mixin.rb
+++ b/app/models/manageiq/providers/kubernetes/container_manager/metrics_capture/prometheus_client_mixin.rb
@@ -36,7 +36,7 @@ def prometheus_options
     worker_class = ManageIQ::Providers::Kubernetes::ContainerManager::MetricsCollectorWorker
 
     {
-      :http_proxy_uri => VMDB::Util.http_proxy_uri.to_s,
+      :http_proxy_uri => VMDB::Util.http_proxy_uri.to_s.presence,
       :verify_ssl     => @ext_management_system.verify_ssl_mode(prometheus_endpoint),
       :ssl_cert_store => @ext_management_system.ssl_cert_store(prometheus_endpoint),
       :open_timeout   => worker_class.worker_settings[:prometheus_open_timeout] || 5,