diff --git a/TARGETS b/TARGETS
index 134bb5081d3678e6f9e5045f22962df55524c6f8..c6c0de48bc07a1fd05fe8ad616cbaa38a696216d 100644
--- a/TARGETS
+++ b/TARGETS
@@ -18,6 +18,7 @@ rocksdb_compiler_flags = [
   "-DROCKSDB_SUPPORT_THREAD_LOCAL",
   "-DHAVE_SSE42",
   "-DOS_LINUX",
+  "-DROCKSDB_UBSAN_RUN",
   # Flags to enable libs we include
   "-DSNAPPY",
   "-DZLIB",
diff --git a/buckifier/targets_cfg.py b/buckifier/targets_cfg.py
index 079b892a75dfe163a67d9e628aa08a066fc3ffd6..836493951aefa38be60e6fada5056be590cfecdd 100644
--- a/buckifier/targets_cfg.py
+++ b/buckifier/targets_cfg.py
@@ -22,6 +22,7 @@ rocksdb_compiler_flags = [
   "-DROCKSDB_SUPPORT_THREAD_LOCAL",
   "-DHAVE_SSE42",
   "-DOS_LINUX",
+  "-DROCKSDB_UBSAN_RUN",
   # Flags to enable libs we include
   "-DSNAPPY",
   "-DZLIB",