diff --git a/src/internal/sofort_driver_impl.h b/src/internal/sofort_driver_impl.h
index 4fdcf96..1322aac 100644
--- a/src/internal/sofort_driver_impl.h
+++ b/src/internal/sofort_driver_impl.h
@@ -48,4 +48,16 @@ static inline struct sfrt_driver_ctx_impl * sfrt_get_driver_ictx(
         return 0;
 }
 
+static inline void sfrt_driver_set_ectx(
+	const struct sfrt_driver_ctx * dctx,
+	const struct sfrt_unit_ctx *   uctx,
+	const char *                   unit)
+{
+	struct sfrt_driver_ctx_impl *  ictx;
+
+	ictx        = sfrt_get_driver_ictx(dctx);
+	ictx->euctx = uctx;
+	ictx->eunit = unit;
+}
+
 #endif