diff --git a/src/ints/bios_disk.cpp b/src/ints/bios_disk.cpp
index 1bacde48..1da9f294 100644
--- a/src/ints/bios_disk.cpp
+++ b/src/ints/bios_disk.cpp
@@ -334,14 +334,14 @@ static Bitu INT13_DiskHandler(void) {
 				if ((machine==MCH_CGA) || (machine==MCH_PCJR)) {
 					/* those bioses call floppy drive reset for invalid drive values */
 					if (((imageDiskList[0]) && (imageDiskList[0]->active)) || ((imageDiskList[1]) && (imageDiskList[1]->active))) {
-						if (reg_dl<0x80) reg_ip++;
+						if (machine!=MCH_PCJR && reg_dl<0x80) reg_ip++;
 						last_status = 0x00;
 						CALLBACK_SCF(false);
 					}
 				}
 				return CBRET_NONE;
 			}
-			if (reg_dl<0x80) reg_ip++;
+			if (machine!=MCH_PCJR && reg_dl<0x80) reg_ip++;
 			last_status = 0x00;
 			CALLBACK_SCF(false);
 		}