diff --git a/.github/workflows/full-openmpi.yml b/.github/workflows/full-openmpi.yml
index 7e9285761..8fdd90b43 100644
--- a/.github/workflows/full-openmpi.yml
+++ b/.github/workflows/full-openmpi.yml
@@ -79,7 +79,7 @@ jobs:
 
     env:
       CC: gcc
-      CXX: "g++ -Wl -ld_classic -Wno-unused-command-line-argument"
+      CXX: "g++ -Wl,-ld_classic -Wno-unused-command-line-argument"
       FC: gfortran
       F77: gfortran
       MPIRUN: mpirun