diff --git a/src/libstrongswan/utils/utils/constant_time.h b/src/libstrongswan/utils/utils/constant_time.h
index 0c2c6a2e0..ea50b69ff 100644
--- a/src/libstrongswan/utils/utils/constant_time.h
+++ b/src/libstrongswan/utils/utils/constant_time.h
@@ -16,7 +16,7 @@
 
 /**
  * @defgroup constant_time_i constant_time
- * @{ @ingroup constant_time_i
+ * @{ @ingroup utils_i
  */
 
 #ifndef CONSTANT_TIME_H_