diff --git a/src/calo_sum_orbit_processor.h b/src/calo_sum_orbit_processor.h
index 6200e6f13b39b65f1f9179e5731abd90e69e01e9..08d87bd8a368b2e076125d9bf7739d875037596f 100644
--- a/src/calo_sum_orbit_processor.h
+++ b/src/calo_sum_orbit_processor.h
@@ -11,7 +11,7 @@ class CaloSumOrbitProcessor : public OrbitProcessor {
                               const char *rd_end_ptr, const char *wr_end_ptr) override;
 
   inline uint32_t GetOrbitSizeInBytes(const FillOrbitMetadata &meta) const override {
-    // size of calo sums packet is 4bytes*(3headerWords + 1frames*8dataWords)=44
+    // size of calo sums packet is 4bytes*(2headerWords + 1frames*8dataWords)=40
     return 4 * (2 + (1 * 8)) * meta.filled_bxs;
   }
 };
diff --git a/src/ugt_orbit_processor.h b/src/ugt_orbit_processor.h
index 5d31babc4ac777deaad12ebccf261aba8ccef670..627cbfb400a2bbd71b99a0ad2041fdfadb9bed54 100644
--- a/src/ugt_orbit_processor.h
+++ b/src/ugt_orbit_processor.h
@@ -11,7 +11,7 @@ class UgtOrbitProcessor : public OrbitProcessor {
                               const char *rd_end_ptr, const char *wr_end_ptr) override;
 
   inline uint32_t GetOrbitSizeInBytes(const FillOrbitMetadata &meta) const override {
-    // size of ugt bits packet is 4bytes*(3headerWords + 2frames*8dataWords)=236
+    // size of ugt bits packet is 4bytes*(2headerWords + 2frames*8dataWords)
     return 4 * (2 + (2 * 8)) * meta.filled_bxs;
   }
 };