diff --git a/addons/board/static/src/legacy/scss/dashboard.scss b/addons/board/static/src/legacy/scss/dashboard.scss
index de175373449..56a3dd6d03d 100644
--- a/addons/board/static/src/legacy/scss/dashboard.scss
+++ b/addons/board/static/src/legacy/scss/dashboard.scss
@@ -123,7 +123,7 @@
             }
 
             // Override height of graph. min-height doesn't do the trick
-            .o_graph_renderer canvas {
+            .o_legacy_graph_renderer canvas {
                 height: 300px;
             }