diff --git a/docs/api/capi/capi-lin.rst b/docs/api/capi/capi-lin.rst
index ed692e713..1766c47bc 100644
--- a/docs/api/capi/capi-lin.rst
+++ b/docs/api/capi/capi-lin.rst
@@ -83,7 +83,7 @@ Enumerations and Typedefs
 .. doxygentypedef:: SilKit_LinFrameResponseType
 .. doxygentypedef:: SilKit_LinFrameStatus
 .. doxygentypedef:: SilKit_LinDataLength
-.. doxygenvariable:: SilKit_LinDataLengthUnknown
+.. doxygendefine:: SilKit_LinDataLengthUnknown
 
 .. doxygentypedef:: SilKit_LinFrameStatusHandler_t
 .. doxygentypedef:: SilKit_LinGoToSleepHandler_t