diff --git a/ircd/Makefile.am b/ircd/Makefile.am
index 1a629ed34..95211fb66 100644
--- a/ircd/Makefile.am
+++ b/ircd/Makefile.am
@@ -144,6 +144,7 @@ if LINUX
 libircd_la_SOURCES += mods_ldso.cc
 endif
 libircd_la_SOURCES += db_write_thread.cc
+libircd_la_SOURCES += db_crc32.cc
 libircd_la_SOURCES += db_port.cc
 libircd_la_SOURCES += db_env.cc
 libircd_la_SOURCES += db.cc
@@ -175,6 +176,9 @@ db_port.lo:           AM_CPPFLAGS := ${ROCKSDB_UNIT_CPPFLAGS} ${AM_CPPFLAGS}
 db_write_thread.lo:   AM_CPPFLAGS := ${ROCKSDB_UNIT_CPPFLAGS} ${AM_CPPFLAGS}
 db_write_thread.lo:   AM_CPPFLAGS += -I$(top_srcdir)/deps/rocksdb/include
 db_write_thread.lo:   AM_CPPFLAGS += -I$(top_srcdir)/deps/rocksdb
+db_crc32.lo:          AM_CPPFLAGS := ${ROCKSDB_UNIT_CPPFLAGS} ${AM_CPPFLAGS}
+db_crc32.lo:          AM_CPPFLAGS += -I$(top_srcdir)/deps/rocksdb/include
+db_crc32.lo:          AM_CPPFLAGS += -I$(top_srcdir)/deps/rocksdb
 fmt.lo:               AM_CPPFLAGS := ${SPIRIT_UNIT_CPPFLAGS} ${AM_CPPFLAGS}
 fmt.lo:               AM_CXXFLAGS := ${SPIRIT_UNIT_CXXFLAGS} ${AM_CXXFLAGS}
 fs.lo:                AM_CPPFLAGS := ${ASIO_UNIT_CPPFLAGS} ${AM_CPPFLAGS}
diff --git a/ircd/db_crc32.cc b/ircd/db_crc32.cc
new file mode 100644
index 000000000..ac8bda48c
--- /dev/null
+++ b/ircd/db_crc32.cc
@@ -0,0 +1,26 @@
+// Matrix Construct
+//
+// Copyright (C) Matrix Construct Developers, Authors & Contributors
+// Copyright (C) 2016-2019 Jason Volk <jason@zemos.net>
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice is present in all copies. The
+// full license for this software is available in the LICENSE file.
+
+#if __has_include("table/block_fetcher.h")
+	#define ROCKSDB_PLATFORM_POSIX
+	#define ZSTD_VERSION_NUMBER 0
+	#include "table/block_fetcher.h"
+	//#define IRCD_DB_BYPASS_CHECKSUM
+#else
+	#warning "The RocksDB source code is not available. Cannot interpose bugfixes for db/.h."
+#endif
+
+#if defined(IRCD_DB_BYPASS_CHECKSUM)
+void
+rocksdb::BlockFetcher::CheckBlockChecksum()
+{
+	//assert(0);
+}
+#endif