diff --git a/Cargo.toml b/Cargo.toml
index 4b7dfe896..450accce5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,9 +16,10 @@ exclude = [
 
 [features]
 default = []
-valgrind = []
+jemalloc = ["librocksdb_sys/jemalloc"]
 portable = ["librocksdb_sys/portable"]
 sse = ["librocksdb_sys/sse"]
+valgrind = []
 
 [dependencies]
 libc = "0.2.11"
diff --git a/librocksdb_sys/Cargo.toml b/librocksdb_sys/Cargo.toml
index 4020f0b9d..7ce17c373 100644
--- a/librocksdb_sys/Cargo.toml
+++ b/librocksdb_sys/Cargo.toml
@@ -14,6 +14,7 @@ tempdir = "0.3"
 
 [features]
 default = []
+jemalloc = []
 # portable doesn't require static link, though it's meaningless
 # when not using with static-link right now in this crate.
 portable = ["libtitan_sys/portable"]
diff --git a/librocksdb_sys/build.rs b/librocksdb_sys/build.rs
index e7886a4ea..3f76590c6 100644
--- a/librocksdb_sys/build.rs
+++ b/librocksdb_sys/build.rs
@@ -77,6 +77,9 @@ fn build_rocksdb() -> Build {
     }
 
     let mut cfg = Config::new("rocksdb");
+    if cfg!(feature = "jemalloc") {
+        cfg.define("WITH_JEMALLOC", "ON");
+    }
     if cfg!(feature = "portable") {
         cfg.define("PORTABLE", "ON");
     }