--- a/src/s390_crypto.c
+++ b/src/s390_crypto.c
@@ -25,6 +25,11 @@
 #include <errno.h>
 #include "s390_crypto.h"
 #include "init.h"
+
+unsigned int sha1_switch, sha256_switch, sha512_switch, des_switch,
+             tdes_switch, aes128_switch, aes192_switch, aes256_switch,
+             prng_switch, tdea128_switch, tdea192_switch, sha512_drng_switch,
+             msa4_switch, msa5_switch;
 
 s390_supported_function_t s390_kimd_functions[] = {
 	{SHA_1, S390_CRYPTO_SHA_1, &sha1_switch},