diff --git a/mpcdf_common.py b/mpcdf_common.py
index 53dce12e6bb01f3b1f8a9fceb724e7a225ddd0bb..5f336899f58c3a353b8ae07631914b96f6a78eac 100644
--- a/mpcdf_common.py
+++ b/mpcdf_common.py
@@ -812,8 +812,7 @@ def openmpi_flavor_dependencies(flavor, distribution):
 def rocm_dependencies(rocm):
     if rocm == "rocm_6_1":
         return ()
-    r = rocm.replace("_", "-", 1).replace("_", ".", 1)
-    return (("system:rocm", r),)
+    return (("system:rocm", rocm),)
 
 
 def openmpi_flavor_kind(flavor):