diff --git a/src/t_stream.c b/src/t_stream.c
index d9db97c3c..4a425fd78 100644
--- a/src/t_stream.c
+++ b/src/t_stream.c
@@ -3229,17 +3229,17 @@ cleanup:
 void xtrimCommand(client *c) {
     robj *o;
 
+    /* Argument parsing. */
+    streamAddTrimArgs parsed_args;
+    if (streamParseAddOrTrimArgsOrReply(c, &parsed_args, 1) < 0)
+        return; /* streamParseAddOrTrimArgsOrReply already replied. */
+
     /* If the key does not exist, we are ok returning zero, that is, the
      * number of elements removed from the stream. */
     if ((o = lookupKeyWriteOrReply(c,c->argv[1],shared.czero)) == NULL
         || checkType(c,o,OBJ_STREAM)) return;
     stream *s = o->ptr;
 
-    /* Argument parsing. */
-    streamAddTrimArgs parsed_args;
-    if (streamParseAddOrTrimArgsOrReply(c, &parsed_args, 1) < 0)
-        return; /* streamParseAddOrTrimArgsOrReply already replied. */
-
     /* Perform the trimming. */
     int64_t deleted = streamTrim(s, &parsed_args);
     if (deleted) {