diff --git a/nix/plantuml-wrapper/src/bin/plantuml b/nix/plantuml-wrapper/src/bin/plantuml
index 3f8cc1e..ba7b24e 100755
--- a/nix/plantuml-wrapper/src/bin/plantuml
+++ b/nix/plantuml-wrapper/src/bin/plantuml
@@ -1,3 +1,4 @@
 #!/bin/bash
 
+export GRAPHVIZ_DOT=/bin/dot
 exec /lib/openjdk/bin/java -jar /lib/plantuml.jar "$@"