diff --git a/include/psa/crypto_struct.h b/include/psa/crypto_struct.h
index 5eb2624..ee3ecd7 100644
--- a/include/psa/crypto_struct.h
+++ b/include/psa/crypto_struct.h
@@ -145,6 +145,13 @@
     } ctx;
 };
 
+#define PSA_CIPHER_OPERATION_INIT {0, 0, 0, 0, 0, 0, {0}}
+static inline struct psa_cipher_operation_s psa_cipher_operation_init( void )
+{
+    const struct psa_cipher_operation_s v = PSA_CIPHER_OPERATION_INIT;
+    return( v );
+}
+
 #if defined(MBEDTLS_MD_C)
 typedef struct
 {