diff --git a/lighthouse/Cargo.toml b/lighthouse/Cargo.toml
index 3368d621aa..7592688f22 100644
--- a/lighthouse/Cargo.toml
+++ b/lighthouse/Cargo.toml
@@ -7,7 +7,7 @@ autotests = false
 rust-version = "1.62"
 
 [features]
-default = ["slasher-mdbx", "malloc_utils/jemalloc"]
+default = ["slasher-mdbx"]
 # Writes debugging .ssz files to /tmp during block processing.
 write_ssz_files = ["beacon_node/write_ssz_files"]
 # Compiles the BLS crypto code so that the binary is portable across machines.