diff --git a/R-package/src/gpboost_R.h b/R-package/src/gpboost_R.h
index 9b0ac3b6..aa590899 100644
--- a/R-package/src/gpboost_R.h
+++ b/R-package/src/gpboost_R.h
@@ -1008,7 +1008,7 @@ GPBOOST_C_EXPORT SEXP GPB_GetCovariateData_R(
 /*!
 * \brief Get additional likelihood parameters (e.g., shape parameter for a gamma likelihood)
 * \param handle Handle of REModel
-* \param[out] Additional likelihood parameters (aux_pars_). This vector needs to be pre-allocated
+* \param[out] aux_pars Additional likelihood parameters (aux_pars_). This vector needs to be pre-allocated
 * \return R character vector (length=1) with the name of the first parameter
 */
 GPBOOST_C_EXPORT SEXP GPB_GetAuxPars_R(
diff --git a/include/LightGBM/c_api.h b/include/LightGBM/c_api.h
index b7a7d3cf..5bc2d76a 100644
--- a/include/LightGBM/c_api.h
+++ b/include/LightGBM/c_api.h
@@ -1693,7 +1693,7 @@ GPBOOST_C_EXPORT int GPB_GetCovariateData(REModelHandle handle,
 /*!
 * \brief Get additional likelihood parameters (e.g., shape parameter for a gamma likelihood)
 * \param handle Handle of REModel
-* \param[out] Additional likelihood parameters (aux_pars_). This vector needs to be pre-allocated
+* \param[out] aux_pars Additional likelihood parameters (aux_pars_). This vector needs to be pre-allocated
 * \param[out] out_str Name of the first parameter
 * \return 0 when succeed, -1 when failure happens
 */