diff --git a/driver-icarus.c b/driver-icarus.c
index 6712a367..ccd762b8 100644
--- a/driver-icarus.c
+++ b/driver-icarus.c
@@ -333,6 +333,8 @@ static void icarus_initialise(struct cgpu_info *icarus, int baud)
 
 			break;
 		case IDENT_ICA:
+			nmsleep(20);
+
 			// Set Data Control
 			transfer(icarus, PL2303_CTRL_OUT, PL2303_REQUEST_CTRL, PL2303_VALUE_CTRL,
 				 icarus->usbdev->found->interface, C_SETDATA);
@@ -340,6 +342,8 @@ static void icarus_initialise(struct cgpu_info *icarus, int baud)
 			if (icarus->usbinfo.nodev)
 				return;
 
+			nmsleep(20);
+
 			// Set Line Control
 			uint32_t ica_data[2] = { PL2303_VALUE_LINE0, PL2303_VALUE_LINE1 };
 			_transfer(icarus, PL2303_CTRL_OUT, PL2303_REQUEST_LINE, PL2303_VALUE_LINE,
@@ -349,12 +353,18 @@ static void icarus_initialise(struct cgpu_info *icarus, int baud)
 			if (icarus->usbinfo.nodev)
 				return;
 
+			nmsleep(20);
+
 			// Vendor
 			transfer(icarus, PL2303_VENDOR_OUT, PL2303_REQUEST_VENDOR, PL2303_VALUE_VENDOR,
 				 icarus->usbdev->found->interface, C_VENDOR);
 
+			nmsleep(20);
+
 			break;
 		case IDENT_AMU:
+			nmsleep(20);
+
 			// Set data control
 			transfer(icarus, CP210X_TYPE_OUT, CP210X_REQUEST_DATA, CP210X_VALUE_DATA,
 				 icarus->usbdev->found->interface, C_SETDATA);
@@ -362,12 +372,16 @@ static void icarus_initialise(struct cgpu_info *icarus, int baud)
 			if (icarus->usbinfo.nodev)
 				return;
 
+			nmsleep(20);
+
 			// Set the baud
 			uint32_t data = CP210X_DATA_BAUD;
 			_transfer(icarus, CP210X_TYPE_OUT, CP210X_REQUEST_BAUD, 0,
 				 icarus->usbdev->found->interface,
 				 &data, sizeof(data), C_SETBAUD);
 
+			nmsleep(20);
+
 			break;
 		default:
 			quit(1, "icarus_intialise() called with invalid %s cgid %i ident=%d",