diff --git a/doc/doxygen/src/css/riot.css b/doc/doxygen/src/css/riot.css
index d6aa02d223b2fffc189ee5ffe21e6bdc447fa8cc..0e524ccd5bc1c4dcbb9642e41ac3b4553c2fff58 100644
--- a/doc/doxygen/src/css/riot.css
+++ b/doc/doxygen/src/css/riot.css
@@ -488,6 +488,10 @@ dl.todo > dt {
 }
 .params .paramdir {
   font-family: Menlo, Monaco, Consolas, "Courier New", monospace;
+  padding-right: 0.5em;
+}
+.params .paramname {
+  padding-right: 2em;
 }
 .icon {
   font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
diff --git a/doc/doxygen/src/css/riot.less b/doc/doxygen/src/css/riot.less
index 27e037c5913a54881bf51cf59d9e614f0122ccf0..dab92636e6b01a7454d23c68751c9679aa817f2b 100644
--- a/doc/doxygen/src/css/riot.less
+++ b/doc/doxygen/src/css/riot.less
@@ -434,6 +434,10 @@ dl.todo > dt {
 }
 .params .paramdir {
   font-family: @font-family-monospace;
+  padding-right: 0.5em;
+}
+.params .paramname {
+  padding-right: 2em;
 }
 .icon {
   font-family: @font-family-base;