diff --git a/foreach/tests/testthat.R b/foreach/tests/testthat.R
index 37f6250..7b32078 100644
--- a/foreach/tests/testthat.R
+++ b/foreach/tests/testthat.R
@@ -4,6 +4,3 @@ library(foreach)
 
 Sys.setenv(FOREACH_BACKEND="SEQ")
 test_check("foreach")
-
-Sys.setenv(FOREACH_BACKEND="PAR")
-test_check("foreach")