diff --git a/R/ollama.R b/R/ollama.R
index 9198e2d..ce24cfb 100644
--- a/R/ollama.R
+++ b/R/ollama.R
@@ -303,7 +303,8 @@ chat <- function(model, messages, output = c("resp", "jsonlist", "raw", "df", "t
 #' list_models("raw")
 list_models <- function(output = c("df", "resp", "jsonlist", "raw", "text"), endpoint = "/api/tags", host = NULL) {
 
-    if (!output[1] %in% c("df", "resp", "jsonlist", "raw", "text")) {
+    output <- output[1]
+    if (!output %in% c("df", "resp", "jsonlist", "raw", "text")) {
         stop("Invalid output format specified. Supported formats are 'df', 'resp', 'jsonlist', 'raw', 'text'.")
     }
     req <- create_request(endpoint, host)
@@ -311,7 +312,7 @@ list_models <- function(output = c("df", "resp", "jsonlist", "raw", "text"), end
     tryCatch(
         {
             resp <- httr2::req_perform(req)
-            return(resp_process(resp = resp, output = output[1]))
+            return(resp_process(resp = resp, output = output))
         },
         error = function(e) {
             stop(e)
diff --git a/R/utils.R b/R/utils.R
index 0f676d6..c8d4b5a 100644
--- a/R/utils.R
+++ b/R/utils.R
@@ -61,11 +61,19 @@ resp_process <- function(resp, output = c("df", "jsonlist", "raw", "resp", "text
         return(resp)
     }
 
+    endpoints_without_stream <- c("api/tags", "api/delete") # endpoints that do not stream
+
     # process stream resp separately
     stream <- FALSE
     headers <- httr2::resp_headers(resp)
     transfer_encoding <- headers$`Transfer-Encoding` # if response is chunked, then it was a streamed output
     if (!is.null(transfer_encoding)) stream <- grepl("chunked", transfer_encoding)
+    for (endpoint in endpoints_without_stream) {
+        if (grepl(endpoint, resp$url)) {
+            stream <- FALSE
+            break
+        }
+    }
     if (stream) {
         return(resp_process_stream(resp, output))
     }