diff --git a/bench/sparse_randomsetter.cpp b/bench/sparse_randomsetter.cpp
index 19a76e3..c433742 100644
--- a/bench/sparse_randomsetter.cpp
+++ b/bench/sparse_randomsetter.cpp
@@ -1,6 +1,7 @@
 
 #define NOGMM
 #define NOMTL
+#define EIGEN_GOOGLEHASH_SUPPORT 1
 
 #include <map>
 #include <ext/hash_map>