diff --git a/js8call-gcc-10.patch b/js8call-gcc-10.patch
index d872669..1ef213a 100644
--- a/js8call-gcc-10.patch
+++ b/js8call-gcc-10.patch
@@ -142,3 +142,29 @@ Index: js8call-2.1.1/lib/js8/ldpcsim174js8a.f90
  ! For reference, the next 3 lines show how to check the CRC
    i1Msg8BitBytes(10)=checksum/256
    i1Msg8BitBytes(11)=iand(checksum,transfer(255,0_2))
+Index: js8call-2.1.1/lib/js8/ldpcsim174js8b.f90
+===================================================================
+--- js8call-2.1.1.orig/lib/js8/ldpcsim174js8b.f90
++++ js8call-2.1.1/lib/js8/ldpcsim174js8b.f90
+@@ -94,7 +94,7 @@ allocate ( rxdata(N), llr(N) )
+ 
+   i1Msg8BitBytes(10:11)=0
+   checksum = crc12 (c_loc (i1Msg8BitBytes), 11)
+-  checksum = xor(checksum, 42) ! TODO: jsherer - could change the crc here
++  checksum = xor(checksum, 42_2) ! TODO: jsherer - could change the crc here
+ ! For reference, the next 3 lines show how to check the CRC
+   i1Msg8BitBytes(10)=checksum/256
+   i1Msg8BitBytes(11)=iand(checksum,transfer(255,0_2))
+Index: js8call-2.1.1/lib/js8/ldpcsim174js8c.f90
+===================================================================
+--- js8call-2.1.1.orig/lib/js8/ldpcsim174js8c.f90
++++ js8call-2.1.1/lib/js8/ldpcsim174js8c.f90
+@@ -94,7 +94,7 @@ allocate ( rxdata(N), llr(N) )
+ 
+   i1Msg8BitBytes(10:11)=0
+   checksum = crc12 (c_loc (i1Msg8BitBytes), 11)
+-  checksum = xor(checksum, 42) ! TODO: jsherer - could change the crc here
++  checksum = xor(checksum, 42_2) ! TODO: jsherer - could change the crc here
+ ! For reference, the next 3 lines show how to check the CRC
+   i1Msg8BitBytes(10)=checksum/256
+   i1Msg8BitBytes(11)=iand(checksum,transfer(255,0_2))