diff --git a/data/core/macros/unit-utils.cfg b/data/core/macros/unit-utils.cfg
index 653f78844b0..24ca50d87da 100644
--- a/data/core/macros/unit-utils.cfg
+++ b/data/core/macros/unit-utils.cfg
@@ -190,6 +190,13 @@
     [/unit]
 #enddef
 
+#define VARIATION VARIATION_NAME
+    # Meant to be used as a suffix to a unit-generating macro call.
+    [+unit]
+        variation={VARIATION_NAME}
+    [/unit]
+#enddef
+
 #define STORE_UNIT_VAR FILTER VAR TO_VAR_NAME
     # Stores an attribute of a unit to the given variable.
     #