diff --git a/Tests/GroupTree/testBlockedUniform.cpp b/Tests/GroupTree/testBlockedUniform.cpp
index 842e10cd9072e1859a570b9e8e7f7252dedf14aa..29c3535df9fb6c34ed80eee8e27b98226b27bef9 100644
--- a/Tests/GroupTree/testBlockedUniform.cpp
+++ b/Tests/GroupTree/testBlockedUniform.cpp
@@ -43,7 +43,7 @@
 #include <memory>
 
 
-//#define RANDOM_PARTICLES
+#define RANDOM_PARTICLES
 
 int main(int argc, char* argv[]){
     const FParameterNames LocalOptionBlocSize { {"-bs"}, "The size of the block of the blocked tree"};