diff --git a/cmd/argocd-server/commands/argocd_server.go b/cmd/argocd-server/commands/argocd_server.go
index 646ecd6a2aabe..e3582dfa07730 100644
--- a/cmd/argocd-server/commands/argocd_server.go
+++ b/cmd/argocd-server/commands/argocd_server.go
@@ -248,7 +248,7 @@ func NewCommand() *cobra.Command {
 	command.Flags().StringVar(&repoServerAddress, "repo-server", env.StringFromEnv("ARGOCD_SERVER_REPO_SERVER", common.DefaultRepoServerAddr), "Repo server address")
 	command.Flags().StringVar(&dexServerAddress, "dex-server", env.StringFromEnv("ARGOCD_SERVER_DEX_SERVER", common.DefaultDexServerAddr), "Dex server address")
 	command.Flags().BoolVar(&disableAuth, "disable-auth", env.ParseBoolFromEnv("ARGOCD_SERVER_DISABLE_AUTH", false), "Disable client authentication")
-	command.Flags().StringVar(&contentTypes, "api-content-types", env.StringFromEnv("ARGOCD_API_CONTENT_TYPES", "application/json"), "Semicolon separated list of allowed content types for non GET api requests. Any content type is allowed if empty.")
+	command.Flags().StringVar(&contentTypes, "api-content-types", env.StringFromEnv("ARGOCD_API_CONTENT_TYPES", ""), "Semicolon separated list of allowed content types for non GET api requests. Any content type is allowed if empty.")
 	command.Flags().BoolVar(&enableGZip, "enable-gzip", env.ParseBoolFromEnv("ARGOCD_SERVER_ENABLE_GZIP", true), "Enable GZIP compression")
 	command.AddCommand(cli.NewVersionCmd(cliName))
 	command.Flags().StringVar(&listenHost, "address", env.StringFromEnv("ARGOCD_SERVER_LISTEN_ADDRESS", common.DefaultAddressAPIServer), "Listen on given address")