diff --git a/Doxyfile.codec.in b/Doxyfile.codec.in
index 247a8b3..037ef7a 100644
--- a/Doxyfile.codec.in
+++ b/Doxyfile.codec.in
@@ -1069,7 +1069,7 @@
 # documentation. Note that a value of 0 will completely suppress the enum
 # values from appearing in the overview section.
 
-ENUM_VALUES_PER_LINE   = 4
+ENUM_VALUES_PER_LINE   = 1
 
 # The GENERATE_TREEVIEW tag is used to specify whether a tree-like index
 # structure should be generated to display hierarchical information.