diff --git a/drivers/s390/crypto/zcrypt_cex2a.c b/drivers/s390/crypto/zcrypt_cex2a.c
index a90b76079fa..c6fb0aa8950 100644
--- a/drivers/s390/crypto/zcrypt_cex2a.c
+++ b/drivers/s390/crypto/zcrypt_cex2a.c
@@ -43,7 +43,7 @@
 #define CEX3A_MAX_MOD_SIZE	CEX2A_MAX_MOD_SIZE
 
 #define CEX2A_SPEED_RATING	970
-#define CEX3A_SPEED_RATING	1100
+#define CEX3A_SPEED_RATING	900 /* Fixme: Needs finetuning */
 
 #define CEX2A_MAX_MESSAGE_SIZE	0x390	/* sizeof(struct type50_crb2_msg)    */
 #define CEX2A_MAX_RESPONSE_SIZE 0x110	/* max outputdatalength + type80_hdr */
diff --git a/drivers/s390/crypto/zcrypt_pcixcc.c b/drivers/s390/crypto/zcrypt_pcixcc.c
index 65cf17b7c5d..79c120578e6 100644
--- a/drivers/s390/crypto/zcrypt_pcixcc.c
+++ b/drivers/s390/crypto/zcrypt_pcixcc.c
@@ -49,7 +49,7 @@
 #define PCIXCC_MCL2_SPEED_RATING	7870
 #define PCIXCC_MCL3_SPEED_RATING	7870
 #define CEX2C_SPEED_RATING		7000
-#define CEX3C_SPEED_RATING		10000	/* FIXME: needs finetuning */
+#define CEX3C_SPEED_RATING		6500	/* FIXME: needs finetuning */
 
 #define PCIXCC_MAX_ICA_MESSAGE_SIZE 0x77c  /* max size type6 v2 crt message */
 #define PCIXCC_MAX_ICA_RESPONSE_SIZE 0x77c /* max size type86 v2 reply	    */