diff --git a/tools/run-libcore-tests.sh b/tools/run-libcore-tests.sh
index 5f49bbe..4c39445 100755
--- a/tools/run-libcore-tests.sh
+++ b/tools/run-libcore-tests.sh
@@ -168,6 +168,8 @@
     gcstress=true
     shift
   elif [[ "$1" == "--no-getrandom" ]]; then
+    # Remove the option from Vogar arguments.
+    vogar_args=${vogar_args/$1}
     getrandom=false
     shift
   elif [[ "$1" == "" ]]; then