--- a/testing/talos/talos.json
+++ b/testing/talos/talos.json
@@ -77,17 +77,18 @@
         "svgr": {
             "tests": ["tsvgx", "tsvgr_opacity", "tart", "tscrollx", "cart", "tsvg_static"],
             "talos_options": ["--disable-e10s"]
         },
         "svgr-e10s": {
             "tests": ["tsvgx", "tsvgr_opacity", "tart", "tscrollx", "cart", "tsvg_static"]
         },
         "perf-reftest": {
-            "tests": ["bloom_basic", "bloom_basic_ref"]
+            "tests": ["bloom_basic", "bloom_basic_ref"],
+            "talos_options": ["--disable-e10s"]
         },
         "perf-reftest-e10s": {
             "tests": ["bloom_basic", "bloom_basic_ref"]
         },
         "tp5o": {
             "tests": ["tp5o"],
             "pagesets_name": "tp5n.zip",
             "talos_options": ["--disable-e10s"]