diff --git a/SDS/sds_cpu.c b/SDS/sds_cpu.c
index 4316c3a4..70219878 100644
--- a/SDS/sds_cpu.c
+++ b/SDS/sds_cpu.c
@@ -452,6 +452,7 @@ while (reason == 0) {                                   /* loop until halted */
                         reason = STOP_UBKPT;            /* stop simulation */
                         break;
                     }
+                sim_interval++;                         /* don't count non-executed instruction */
                 break;
                 }
             }
diff --git a/sigma/sigma_cpu.c b/sigma/sigma_cpu.c
index 974d3bf8..6064e924 100644
--- a/sigma/sigma_cpu.c
+++ b/sigma/sigma_cpu.c
@@ -472,6 +472,7 @@ while (reason == 0) {                                   /* loop until stop */
         if (sim_brk_summ &&
             sim_brk_test (PC, SWMASK ('E'))) {          /* breakpoint? */
             reason = STOP_IBKPT;                        /* stop simulation */
+            sim_interval++;                             /* don't count non-executed instruction */
             break;
             }
         if (PSW_QRX9 && (PC & PSW1_XA))                 /* S9 real ext && ext? */