diff --git a/pkgs/doxygen.yaml b/pkgs/doxygen.yaml
index 704bf68cd..ba3bb3222 100644
--- a/pkgs/doxygen.yaml
+++ b/pkgs/doxygen.yaml
@@ -1,7 +1,7 @@
 extends: [autotools_package]
 
 dependencies:
-  build: [bison,flex]
+  build: [bison, flex]
 
 sources:
 - url: https://github.com/doxygen/doxygen.git