diff --git a/src/lib/sqlite/Util.hxx b/src/lib/sqlite/Util.hxx
index ce042cc03..4a6ccedeb 100644
--- a/src/lib/sqlite/Util.hxx
+++ b/src/lib/sqlite/Util.hxx
@@ -26,6 +26,8 @@
 
 #include <assert.h>
 
+namespace Sqlite {
+
 /**
  * Throws #SqliteError on error.
  */
@@ -158,4 +160,6 @@ ExecuteForEach(sqlite3_stmt *stmt, F &&f)
 	}
 }
 
+} // namespace Sqlite
+
 #endif
diff --git a/src/sticker/Database.cxx b/src/sticker/Database.cxx
index 0c0d5f3c3..6ed64316b 100644
--- a/src/sticker/Database.cxx
+++ b/src/sticker/Database.cxx
@@ -28,6 +28,8 @@
 
 #include <assert.h>
 
+using namespace Sqlite;
+
 enum sticker_sql {
 	STICKER_SQL_GET,
 	STICKER_SQL_LIST,