diff --git a/bridges/modules/substrate/src/fork_tests.rs b/bridges/modules/substrate/src/fork_tests.rs
index f90d2c0231ca6..c71ed3938e1bb 100644
--- a/bridges/modules/substrate/src/fork_tests.rs
+++ b/bridges/modules/substrate/src/fork_tests.rs
@@ -397,7 +397,9 @@ where
 						}
 
 						// Try and import into storage
-						let res = verifier.import_header(header.clone()).map_err(TestError::Import);
+						let res = verifier
+							.import_header(header.hash(), header.clone())
+							.map_err(TestError::Import);
 						assert_eq!(
 							res, *expected_result,
 							"Expected {:?} while importing header ({}, {}), got {:?}",
@@ -427,7 +429,9 @@ where
 						header.digest = change_log(*delay);
 					}
 
-					let res = verifier.import_header(header.clone()).map_err(TestError::Import);
+					let res = verifier
+						.import_header(header.hash(), header.clone())
+						.map_err(TestError::Import);
 					assert_eq!(
 						res, *expected_result,
 						"Expected {:?} while importing header ({}, {}), got {:?}",
diff --git a/bridges/modules/substrate/src/lib.rs b/bridges/modules/substrate/src/lib.rs
index fa957c384fb05..fbd6cab95734e 100644
--- a/bridges/modules/substrate/src/lib.rs
+++ b/bridges/modules/substrate/src/lib.rs
@@ -172,15 +172,21 @@ decl_module! {
 		) -> DispatchResult {
 			ensure_operational::<T>()?;
 			let _ = ensure_signed(origin)?;
-			frame_support::debug::trace!("Got header {:?}", header);
+			let hash = header.hash();
+			frame_support::debug::trace!("Going to import header {:?}: {:?}", hash, header);
 
 			let mut verifier = verifier::Verifier {
 				storage: PalletStorage::<T>::new(),
 			};
 
 			let _ = verifier
-				.import_header(header)
-				.map_err(|_| <Error<T>>::InvalidHeader)?;
+				.import_header(hash, header)
+				.map_err(|e| {
+					frame_support::debug::error!("Failed to import header {:?}: {:?}", hash, e);
+					<Error<T>>::InvalidHeader
+				})?;
+
+			frame_support::debug::trace!("Successfully imported header: {:?}", hash);
 
 			Ok(())
 		}
@@ -199,7 +205,7 @@ decl_module! {
 		) -> DispatchResult {
 			ensure_operational::<T>()?;
 			let _ = ensure_signed(origin)?;
-			frame_support::debug::trace!("Got header hash {:?}", hash);
+			frame_support::debug::trace!("Going to finalize header: {:?}", hash);
 
 			let mut verifier = verifier::Verifier {
 				storage: PalletStorage::<T>::new(),
@@ -207,7 +213,12 @@ decl_module! {
 
 			let _ = verifier
 				.import_finality_proof(hash, finality_proof.into())
-				.map_err(|_| <Error<T>>::UnfinalizedHeader)?;
+				.map_err(|e| {
+					frame_support::debug::error!("Failed to finalize header {:?}: {:?}", hash, e);
+					<Error<T>>::UnfinalizedHeader
+				})?;
+
+			frame_support::debug::trace!("Successfully finalized header: {:?}", hash);
 
 			Ok(())
 		}
diff --git a/bridges/modules/substrate/src/verifier.rs b/bridges/modules/substrate/src/verifier.rs
index 913129f19c6ef..41139cfebeb0c 100644
--- a/bridges/modules/substrate/src/verifier.rs
+++ b/bridges/modules/substrate/src/verifier.rs
@@ -112,8 +112,7 @@ where
 	///
 	/// Will perform some basic checks to make sure that this header doesn't break any assumptions
 	/// such as being on a different finalized fork.
-	pub fn import_header(&mut self, header: H) -> Result<(), ImportError> {
-		let hash = header.hash();
+	pub fn import_header(&mut self, hash: H::Hash, header: H) -> Result<(), ImportError> {
 		let best_finalized = self.storage.best_finalized_header();
 
 		if header.number() <= best_finalized.number() {
@@ -424,7 +423,7 @@ mod tests {
 
 			let header = test_header(1);
 			let mut verifier = Verifier { storage };
-			assert_err!(verifier.import_header(header), ImportError::OldHeader);
+			assert_err!(verifier.import_header(header.hash(), header), ImportError::OldHeader);
 		})
 	}
 
@@ -440,7 +439,10 @@ mod tests {
 			let header = TestHeader::new_from_number(2);
 
 			let mut verifier = Verifier { storage };
-			assert_err!(verifier.import_header(header), ImportError::MissingParent);
+			assert_err!(
+				verifier.import_header(header.hash(), header),
+				ImportError::MissingParent
+			);
 		})
 	}
 
@@ -460,7 +462,7 @@ mod tests {
 			<ImportedHeaders<TestRuntime>>::insert(header.hash(), &imported_header);
 
 			let mut verifier = Verifier { storage };
-			assert_err!(verifier.import_header(header), ImportError::OldHeader);
+			assert_err!(verifier.import_header(header.hash(), header), ImportError::OldHeader);
 		})
 	}
 
@@ -484,7 +486,7 @@ mod tests {
 			let mut verifier = Verifier {
 				storage: storage.clone(),
 			};
-			assert_ok!(verifier.import_header(header.clone()));
+			assert_ok!(verifier.import_header(header.hash(), header.clone()));
 
 			let stored_header = storage
 				.header_by_hash(header.hash())
@@ -514,8 +516,8 @@ mod tests {
 			};
 
 			// It should be fine to import both
-			assert_ok!(verifier.import_header(header_on_fork1.clone()));
-			assert_ok!(verifier.import_header(header_on_fork2.clone()));
+			assert_ok!(verifier.import_header(header_on_fork1.hash(), header_on_fork1.clone()));
+			assert_ok!(verifier.import_header(header_on_fork2.hash(), header_on_fork2.clone()));
 
 			// We should have two headers marked as being the best since they're
 			// both at the same height
@@ -559,7 +561,7 @@ mod tests {
 			let mut verifier = Verifier {
 				storage: storage.clone(),
 			};
-			assert_ok!(verifier.import_header(better_header.clone()));
+			assert_ok!(verifier.import_header(better_header.hash(), better_header.clone()));
 
 			// Since `better_header` is the only one at height = 2 we should only have
 			// a single "best header" now.
@@ -668,7 +670,7 @@ mod tests {
 			let mut verifier = Verifier { storage };
 
 			assert_eq!(
-				verifier.import_header(header).unwrap_err(),
+				verifier.import_header(header.hash(), header).unwrap_err(),
 				ImportError::InvalidAuthoritySet
 			);
 		})
@@ -697,7 +699,7 @@ mod tests {
 				storage: storage.clone(),
 			};
 
-			assert_ok!(verifier.import_header(header.clone()));
+			assert_ok!(verifier.import_header(header.hash(), header.clone()));
 			assert_ok!(verifier.import_finality_proof(header.hash(), justification.into()));
 			assert_eq!(storage.best_finalized_header().header, header);
 		})
@@ -724,7 +726,7 @@ mod tests {
 			let mut verifier = Verifier {
 				storage: storage.clone(),
 			};
-			assert!(verifier.import_header(header.clone()).is_ok());
+			assert!(verifier.import_header(header.hash(), header.clone()).is_ok());
 			assert!(verifier
 				.import_finality_proof(header.hash(), justification.into())
 				.is_ok());
@@ -776,7 +778,7 @@ mod tests {
 				storage: storage.clone(),
 			};
 
-			assert_ok!(verifier.import_header(header.clone()));
+			assert_ok!(verifier.import_header(header.hash(), header.clone()));
 			assert_eq!(storage.missing_justifications().len(), 1);
 			assert_eq!(storage.missing_justifications()[0].hash, header.hash());