diff --git a/var/spack/repos/builtin/packages/nag/package.py b/var/spack/repos/builtin/packages/nag/package.py
index 7cd51060b17..8eba3d8412b 100644
--- a/var/spack/repos/builtin/packages/nag/package.py
+++ b/var/spack/repos/builtin/packages/nag/package.py
@@ -36,7 +36,8 @@ class Nag(Package, CompilerPackage):
         deprecated=True,
     )
 
-    depends_on("fortran", type="build")  # generated
+    depends_on("gcc languages=c", type="run", when="platform=linux")
+    provides("fortran")
 
     # Licensing
     license_required = True