diff --git a/.github/workflows/rust-ubuntu-latest.yml b/.github/workflows/rust-ubuntu-latest.yml
index ab59df2..3a200b9 100644
--- a/.github/workflows/rust-ubuntu-latest.yml
+++ b/.github/workflows/rust-ubuntu-latest.yml
@@ -4,7 +4,7 @@ on:
   push:
     branches: [ "master" ]
   pull_request:
-    branches: [ "master, icarus_v2_support" ]
+    branches: [ "master", "icarus_v2_support" ]
 
 env:
   CARGO_TERM_COLOR: always