diff --git a/satrs-core/src/tmtc/ccsds_distrib.rs b/satrs-core/src/tmtc/ccsds_distrib.rs
index ff4c77b..1da91d7 100644
--- a/satrs-core/src/tmtc/ccsds_distrib.rs
+++ b/satrs-core/src/tmtc/ccsds_distrib.rs
@@ -148,7 +148,7 @@ impl<E: 'static> ReceivesTc for CcsdsDistributor<E> {
                 }),
             ));
         }
-        let sp_header = SpHeader::from_raw_slice(tc_raw).map_err(|e| CcsdsError::PacketError(e))?;
+        let sp_header = SpHeader::from_be_bytes(tc_raw).map_err(|e| CcsdsError::PacketError(e))?;
         self.dispatch_ccsds(&sp_header, tc_raw)
     }
 }
diff --git a/satrs-core/src/tmtc/pus_distrib.rs b/satrs-core/src/tmtc/pus_distrib.rs
index 29e139f..3f0db05 100644
--- a/satrs-core/src/tmtc/pus_distrib.rs
+++ b/satrs-core/src/tmtc/pus_distrib.rs
@@ -98,7 +98,7 @@ impl<E: 'static> ReceivesTc for PusDistributor<E> {
     type Error = PusDistribError<E>;
     fn pass_tc(&mut self, tm_raw: &[u8]) -> Result<(), Self::Error> {
         // Convert to ccsds and call pass_ccsds
-        let sp_header = SpHeader::from_raw_slice(tm_raw)
+        let sp_header = SpHeader::from_be_bytes(tm_raw)
             .map_err(|e| PusDistribError::PusError(PusError::ByteConversionError(e)))?;
         self.pass_ccsds(&sp_header, tm_raw)
     }
diff --git a/spacepackets b/spacepackets
index 3a71b00..038755e 160000
--- a/spacepackets
+++ b/spacepackets
@@ -1 +1 @@
-Subproject commit 3a71b00198566d009f4f08e69cf61d48ccc14bcd
+Subproject commit 038755e56eb4f43f5959687180fa98c80cd16b59