diff --git a/include/psa/crypto_struct.h b/include/psa/crypto_struct.h
index 4060074454..1be9949f4e 100644
--- a/include/psa/crypto_struct.h
+++ b/include/psa/crypto_struct.h
@@ -250,8 +250,8 @@ struct psa_key_derivation_s
 
 /* This only zeroes out the first byte in the union, the rest is unspecified. */
 #define PSA_KEY_DERIVATION_OPERATION_INIT { 0, 0, 0, { 0 } }
-static inline
-struct psa_key_derivation_s psa_key_derivation_operation_init( void )
+static inline struct psa_key_derivation_s psa_key_derivation_operation_init(
+        void )
 {
     const struct psa_key_derivation_s v = PSA_KEY_DERIVATION_OPERATION_INIT;
     return( v );