diff --git a/charts/argo/templates/workflow-controller-config-map.yaml b/charts/argo/templates/workflow-controller-config-map.yaml
index 00acc301..639f7737 100644
--- a/charts/argo/templates/workflow-controller-config-map.yaml
+++ b/charts/argo/templates/workflow-controller-config-map.yaml
@@ -33,6 +33,9 @@ data:
         bucket: {{ .Values.artifactRepository.s3.bucket | default .Values.minio.defaultBucket.name }}
         endpoint: {{ .Values.artifactRepository.s3.endpoint | default (printf "%s-%s" .Release.Name "minio:9000") }}
         insecure: {{ .Values.artifactRepository.s3.insecure }}
+        {{- if .Values.artifactRepository.s3.keyPrefix }}
+        keyPrefix: {{ .Values.artifactRepository.s3.keyPrefix }}
+        {{- end }}
       {{- end}}
     {{- if .Values.controller.metricsConfig.enabled }}
     metricsConfig: