diff --git a/sys/boot/i386/libi386/biosdisk.c b/sys/boot/i386/libi386/biosdisk.c
index bd4d9d7fd0f..c673e10fef7 100644
--- a/sys/boot/i386/libi386/biosdisk.c
+++ b/sys/boot/i386/libi386/biosdisk.c
@@ -254,7 +254,7 @@ bd_int13probe(struct bdinfo *bd)
 	    ((v86.ebx & 0xffff) == 0xaa55) &&		/* signature */
 	    (v86.ecx & 0x1)) {				/* packets mode ok */
 	    bd->bd_flags |= BD_MODEEDD1;
-	    if((v86.eax & 0xff00) > 0x300)
+	    if((v86.eax & 0xff00) >= 0x3000)
 	        bd->bd_flags |= BD_MODEEDD3;
 	}
 	return(1);