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-rw-r--r--target/s390x/misc_helper.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/target/s390x/misc_helper.c b/target/s390x/misc_helper.c
index 44c5c401fb..d23ffcd890 100644
--- a/target/s390x/misc_helper.c
+++ b/target/s390x/misc_helper.c
@@ -192,7 +192,7 @@ uint32_t HELPER(stsi)(CPUS390XState *env, uint64_t a0,
     if ((r0 & STSI_LEVEL_MASK) <= STSI_LEVEL_3 &&
         ((r0 & STSI_R0_RESERVED_MASK) || (r1 & STSI_R1_RESERVED_MASK))) {
         /* valid function code, invalid reserved bits */
-        program_interrupt(env, PGM_SPECIFICATION, 2);
+        program_interrupt(env, PGM_SPECIFICATION, 4);
     }
 
     sel1 = r0 & STSI_R0_SEL1_MASK;