diff --git a/src/add-ons/kernel/file_systems/bfs/BPlusTree.cpp b/src/add-ons/kernel/file_systems/bfs/BPlusTree.cpp
index 44b333fce0..1effad37d7 100644
--- a/src/add-ons/kernel/file_systems/bfs/BPlusTree.cpp
+++ b/src/add-ons/kernel/file_systems/bfs/BPlusTree.cpp
@@ -1002,7 +1002,7 @@ BPlusTree::_SplitNode(bplustree_node *node, off_t nodeOffset,
 	int32 keyIndex = *_keyIndex;	// can become less than zero!
 
 	if (keyIndex > node->NumKeys()) {
-		FATAL(("key index out of bounds: %ld, num keys: %u\n", keyIndex,
+		FATAL(("key index out of bounds: %d, num keys: %u\n", (int)keyIndex,
 			node->NumKeys()));
 		return B_BAD_VALUE;
 	}
diff --git a/src/add-ons/kernel/file_systems/bfs/Journal.cpp b/src/add-ons/kernel/file_systems/bfs/Journal.cpp
index 48658e9702..e7173911e4 100644
--- a/src/add-ons/kernel/file_systems/bfs/Journal.cpp
+++ b/src/add-ons/kernel/file_systems/bfs/Journal.cpp
@@ -380,8 +380,8 @@ Journal::_ReplayRunArray(int32 *_start)
 	CachedBlock cached(fVolume);
 	for (int32 index = 0; index < array->CountRuns(); index++) {
 		const block_run &run = array->RunAt(index);
-		INFORM(("replay block run %lu:%u:%u in log at %Ld!\n",
-			run.AllocationGroup(), run.Start(), run.Length(), blockNumber));
+		INFORM(("replay block run %u:%u:%u in log at %Ld!\n",
+			(int)run.AllocationGroup(), run.Start(), run.Length(), blockNumber));
 
 		off_t offset = fVolume->ToOffset(run);
 		for (int32 i = 0; i < run.Length(); i++) {