diff --git a/src/target/cortex_m3.c b/src/target/cortex_m3.c
index 9e0916ff3..12574c66a 100644
--- a/src/target/cortex_m3.c
+++ b/src/target/cortex_m3.c
@@ -523,7 +523,7 @@ int cortex_m3_soft_reset_halt(struct target_s *target)
 				LOG_DEBUG("waiting for system reset-halt, dcb_dhcsr 0x%x, %i ms", dcb_dhcsr, timeout);
 		}
 		timeout++;
-		usleep(1000);
+		alive_sleep(1);
 	}
 		
 	return ERROR_OK;
diff --git a/src/target/cortex_swjdp.c b/src/target/cortex_swjdp.c
index dc50fea1c..a4a997b8c 100644
--- a/src/target/cortex_swjdp.c
+++ b/src/target/cortex_swjdp.c
@@ -966,7 +966,7 @@ int ahbap_debugport_init(swjdp_common_t *swjdp)
 		swjdp_read_dpacc(swjdp, &ctrlstat, DP_CTRL_STAT);
 		if ((retval=jtag_execute_queue())!=ERROR_OK)
 			return retval;
-		usleep(10000);
+		alive_sleep(10);
 	}
 
 	while (!(ctrlstat & CSYSPWRUPACK) && (cnt++ < 10))
@@ -975,7 +975,7 @@ int ahbap_debugport_init(swjdp_common_t *swjdp)
 		swjdp_read_dpacc(swjdp, &ctrlstat, DP_CTRL_STAT);
 		if ((retval=jtag_execute_queue())!=ERROR_OK)
 			return retval;
-		usleep(10000);
+		alive_sleep(10);
 	}
 
 	swjdp_read_dpacc(swjdp, &dummy, DP_CTRL_STAT);