diff --git a/library/bignum.c b/library/bignum.c
index fb748d8a1..02d93edcf 100644
--- a/library/bignum.c
+++ b/library/bignum.c
@@ -73,7 +73,8 @@
 #define CHARS_TO_LIMBS(i) ( (i) / ciL + ( (i) % ciL != 0 ) )
 
 /* Implementation that should never be optimized out by the compiler */
-static void mbedtls_mpi_zeroize( mbedtls_mpi_uint *v, size_t n ) {
+static void mbedtls_mpi_zeroize( mbedtls_mpi_uint *v, size_t n )
+{
     mbedtls_platform_zeroize( v, ciL * n );
 }