diff --git a/include/mbedtls/bignum.h b/include/mbedtls/bignum.h
index c0d0c82..9d2cff3 100644
--- a/include/mbedtls/bignum.h
+++ b/include/mbedtls/bignum.h
@@ -35,14 +35,22 @@
 #include <stdio.h>
 #endif
 
-#define MBEDTLS_ERR_MPI_FILE_IO_ERROR                     -0x0002  /**< An error occurred while reading from or writing to a file. */
-#define MBEDTLS_ERR_MPI_BAD_INPUT_DATA                    -0x0004  /**< Bad input parameters to function. */
-#define MBEDTLS_ERR_MPI_INVALID_CHARACTER                 -0x0006  /**< There is an invalid character in the digit string. */
-#define MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL                  -0x0008  /**< The buffer is too small to write to. */
-#define MBEDTLS_ERR_MPI_NEGATIVE_VALUE                    -0x000A  /**< The input arguments are negative or result in illegal output. */
-#define MBEDTLS_ERR_MPI_DIVISION_BY_ZERO                  -0x000C  /**< The input argument for division is zero, which is not allowed. */
-#define MBEDTLS_ERR_MPI_NOT_ACCEPTABLE                    -0x000E  /**< The input arguments are not acceptable. */
-#define MBEDTLS_ERR_MPI_ALLOC_FAILED                      -0x0010  /**< Memory allocation failed. */
+/** An error occurred while reading from or writing to a file. */
+#define MBEDTLS_ERR_MPI_FILE_IO_ERROR                     -0x0002
+/** Bad input parameters to function. */
+#define MBEDTLS_ERR_MPI_BAD_INPUT_DATA                    -0x0004
+/** There is an invalid character in the digit string. */
+#define MBEDTLS_ERR_MPI_INVALID_CHARACTER                 -0x0006
+/** The buffer is too small to write to. */
+#define MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL                  -0x0008
+/** The input arguments are negative or result in illegal output. */
+#define MBEDTLS_ERR_MPI_NEGATIVE_VALUE                    -0x000A
+/** The input argument for division is zero, which is not allowed. */
+#define MBEDTLS_ERR_MPI_DIVISION_BY_ZERO                  -0x000C
+/** The input arguments are not acceptable. */
+#define MBEDTLS_ERR_MPI_NOT_ACCEPTABLE                    -0x000E
+/** Memory allocation failed. */
+#define MBEDTLS_ERR_MPI_ALLOC_FAILED                      -0x0010
 
 #define MBEDTLS_MPI_CHK(f)       \
     do                           \