diff --git a/jemalloc/src/jemalloc.c b/jemalloc/src/jemalloc.c
index bf2ace39..b36590dd 100644
--- a/jemalloc/src/jemalloc.c
+++ b/jemalloc/src/jemalloc.c
@@ -324,6 +324,7 @@ malloc_init_hard(void)
 			CPU_SPINWAIT;
 			malloc_mutex_lock(&init_lock);
 		} while (malloc_initialized == false);
+		malloc_mutex_unlock(&init_lock);
 		return (false);
 	}