diff --git a/storage/default-dir-piece-completion-boltdb.go b/storage/default-dir-piece-completion-boltdb.go
index 5573fc8d..3ac6a77d 100644
--- a/storage/default-dir-piece-completion-boltdb.go
+++ b/storage/default-dir-piece-completion-boltdb.go
@@ -1,7 +1,8 @@
 // Bolt piece completion is available, and sqlite is not.
-//go:build !noboltdb && (!cgo || nosqlite)
+//go:build !noboltdb && (!cgo || nosqlite) && !wasm
 // +build !noboltdb
 // +build !cgo nosqlite
+// +build !wasm
 
 package storage
 
diff --git a/storage/default-dir-piece-completion-other.go b/storage/default-dir-piece-completion-other.go
index a0564bf4..3cd42fb7 100644
--- a/storage/default-dir-piece-completion-other.go
+++ b/storage/default-dir-piece-completion-other.go
@@ -1,7 +1,7 @@
 // Bolt piece completion is not available, and neither is sqlite.
-//go:build (!cgo || nosqlite) && noboltdb
+//go:build (!cgo || nosqlite) && (noboltdb || wasm)
 // +build !cgo nosqlite
-// +build noboltdb
+// +build noboltdb wasm
 
 package storage
 
diff --git a/storage/sqlite-piece-completion.go b/storage/sqlite-piece-completion.go
index 153e51e7..eb2e1c3d 100644
--- a/storage/sqlite-piece-completion.go
+++ b/storage/sqlite-piece-completion.go
@@ -1,5 +1,6 @@
 // modernc.org/sqlite depends on modernc.org/libc which doesn't work for JS (and probably wasm but I
 // think JS is the stronger signal).
+
 //go:build cgo && !nosqlite
 // +build cgo,!nosqlite
 
diff --git a/storage/sqlite/deprecated.go b/storage/sqlite/deprecated.go
index a1b1df14..47698ef0 100644
--- a/storage/sqlite/deprecated.go
+++ b/storage/sqlite/deprecated.go
@@ -1,3 +1,6 @@
+//go:build cgo
+// +build cgo
+
 package sqliteStorage
 
 import (
diff --git a/storage/sqlite/direct.go b/storage/sqlite/direct.go
index 4256996a..3d51fd31 100644
--- a/storage/sqlite/direct.go
+++ b/storage/sqlite/direct.go
@@ -1,3 +1,6 @@
+//go:build cgo
+// +build cgo
+
 package sqliteStorage
 
 import (