diff --git a/charts/linkerd2/templates/_config.tpl b/charts/linkerd2/templates/_config.tpl
index ea41d359b..fe365fb4b 100644
--- a/charts/linkerd2/templates/_config.tpl
+++ b/charts/linkerd2/templates/_config.tpl
@@ -30,10 +30,10 @@
     "port": {{.Values.global.proxy.ports.control}}
   },
   "ignoreInboundPorts":[
-    {{- include "partials.splitStringListToPorts" .Values.global.proxyInit.ignoreInboundPorts -}}
+    {{- include "partials.splitStringListToPortRanges" .Values.global.proxyInit.ignoreInboundPorts -}}
   ],
   "ignoreOutboundPorts":[
-    {{- include "partials.splitStringListToPorts" .Values.global.proxyInit.ignoreOutboundPorts -}}
+    {{- include "partials.splitStringListToPortRanges" .Values.global.proxyInit.ignoreOutboundPorts -}}
   ],
   "inboundPort":{
     "port": {{.Values.global.proxy.ports.inbound}}
diff --git a/charts/partials/templates/_helpers.tpl b/charts/partials/templates/_helpers.tpl
index 6eec943f9..928da6609 100644
--- a/charts/partials/templates/_helpers.tpl
+++ b/charts/partials/templates/_helpers.tpl
@@ -46,16 +46,16 @@ For example "11,22,55,44" will become "11","22","55","44"
 {{- end -}}
 
 {{/*
-Splits a coma separated list into a list of port objects.
-For example "11,22,55" will become{"port":11},{"port":22},
-{"port":55}
+Splits a coma separated list into a list of PortRange objects.
+For example "11,22,55" will become{"portRange":11},{"portRange":22},
+{"portRange":55}
 */}}
-{{- define "partials.splitStringListToPorts" -}}
+{{- define "partials.splitStringListToPortRanges" -}}
 {{- if gt (len .) 0 -}}
 {{- $ports := splitList "," . -}}
 {{- $last := sub (len $ports) 1 -}}
 {{- range $i,$port := $ports -}}
-{"port":{{$port}}}{{ternary "," "" (ne $i $last)}}
+{"portRange":"{{$port}}"}{{ternary "," "" (ne $i $last)}}
 {{- end -}}
 {{- end -}}
 {{- end -}}
diff --git a/cli/cmd/testdata/install_helm_output.golden b/cli/cmd/testdata/install_helm_output.golden
index 953b2a6c4..150affdd7 100644
--- a/cli/cmd/testdata/install_helm_output.golden
+++ b/cli/cmd/testdata/install_helm_output.golden
@@ -902,8 +902,8 @@ data:
       "controlPort":{
         "port": 4190
       },
-      "ignoreInboundPorts":[{"port":222}],
-      "ignoreOutboundPorts":[{"port":111}],
+      "ignoreInboundPorts":[{"portRange":"222"}],
+      "ignoreOutboundPorts":[{"portRange":"111"}],
       "inboundPort":{
         "port": 4143
       },
diff --git a/cli/cmd/testdata/install_helm_output_addons.golden b/cli/cmd/testdata/install_helm_output_addons.golden
index a8253d435..a0ffddf71 100644
--- a/cli/cmd/testdata/install_helm_output_addons.golden
+++ b/cli/cmd/testdata/install_helm_output_addons.golden
@@ -902,8 +902,8 @@ data:
       "controlPort":{
         "port": 4190
       },
-      "ignoreInboundPorts":[{"port":222}],
-      "ignoreOutboundPorts":[{"port":111}],
+      "ignoreInboundPorts":[{"portRange":"222"}],
+      "ignoreOutboundPorts":[{"portRange":"111"}],
       "inboundPort":{
         "port": 4143
       },
diff --git a/cli/cmd/testdata/install_helm_output_ha.golden b/cli/cmd/testdata/install_helm_output_ha.golden
index 8afbbbbc6..77a47c933 100644
--- a/cli/cmd/testdata/install_helm_output_ha.golden
+++ b/cli/cmd/testdata/install_helm_output_ha.golden
@@ -902,8 +902,8 @@ data:
       "controlPort":{
         "port": 4190
       },
-      "ignoreInboundPorts":[{"port":222}],
-      "ignoreOutboundPorts":[{"port":111}],
+      "ignoreInboundPorts":[{"portRange":"222"}],
+      "ignoreOutboundPorts":[{"portRange":"111"}],
       "inboundPort":{
         "port": 4143
       },