diff --git a/src/librustc_mir/dataflow/generic/graphviz.rs b/src/librustc_mir/dataflow/generic/graphviz.rs
index 2a08feff9e77a..9ed80a98bbb43 100644
--- a/src/librustc_mir/dataflow/generic/graphviz.rs
+++ b/src/librustc_mir/dataflow/generic/graphviz.rs
@@ -211,6 +211,7 @@ where
         )?;
 
         // C: Entry state
+        self.bg = Background::Light;
         self.results.seek_to_block_start(block);
         self.write_row_with_curr_state(w, "", "(on entry)")?;
         self.prev_state.overwrite(self.results.get());