diff --git a/postgrest/_async/client.py b/postgrest/_async/client.py
index 2b480c42..4c9a102f 100644
--- a/postgrest/_async/client.py
+++ b/postgrest/_async/client.py
@@ -108,9 +108,7 @@ def rpc(
             This method now returns a :class:`AsyncFilterRequestBuilder` which allows you to
             filter on the RPC's resultset.
         """
-        method = "POST"
-        if head or get:
-            method = "HEAD" if head else "GET"
+        method = "HEAD" if head else "GET" if get else "POST"
 
         headers = Headers({"Prefer": f"count={count}"}) if count else Headers()