diff --git a/ui/src/components/ProcessDiagram/ProcessDiagram.module.css b/ui/src/components/ProcessDiagram/ProcessDiagram.module.css
index 995f3354..72652a76 100644
--- a/ui/src/components/ProcessDiagram/ProcessDiagram.module.css
+++ b/ui/src/components/ProcessDiagram/ProcessDiagram.module.css
@@ -13,6 +13,8 @@
   width: 100%;
   height: 100%;
   display: block;
+  -webkit-user-select: none;
+  user-select: none;
   outline: none;
 }