diff --git a/content/zettels/feedforward_control.md b/content/zettels/feedforward_control.md
index db8cedf..d4f1ed4 100644
--- a/content/zettels/feedforward_control.md
+++ b/content/zettels/feedforward_control.md
@@ -18,7 +18,7 @@ Depending on the physical system to be controlled, several feedforward controlle
 
 ## Rigid Body Feedforward {#rigid-body-feedforward}
 
-<span id="sec-rigid-body-feedforward"></span>
+<a id="sec-rigid-body-feedforward"></a>
 
 Second order trajectory planning: the acceleration and velocity can be bound to wanted values.