diff --git a/var/spack/repos/builtin/packages/ldak/package.py b/var/spack/repos/builtin/packages/ldak/package.py
index 94209a9e76b..9dd4638c300 100644
--- a/var/spack/repos/builtin/packages/ldak/package.py
+++ b/var/spack/repos/builtin/packages/ldak/package.py
@@ -28,9 +28,9 @@ class Ldak(Package):
     depends_on("zlib-api")
     depends_on("blas")
     depends_on("lapack")
-    depends_on("openblas threads=openmp", when="^openblas")
-    depends_on("intel-mkl threads=openmp", when="^intel-mkl")
-    depends_on("intel-oneapi-mkl threads=openmp", when="^intel-oneapi-mkl")
+    depends_on("openblas threads=openmp", when="^[virtuals=blas] openblas")
+    depends_on("intel-mkl threads=openmp", when="^[virtuals=blas] intel-mkl")
+    depends_on("intel-oneapi-mkl threads=openmp", when="^[virtuals=blas] intel-oneapi-mkl")
     depends_on("glpk", when="+glpk")
 
     requires("target=x86_64:", when="~glpk", msg="bundled qsopt is only for x86_64")