diff --git a/tests/validate_soma.cpp b/tests/validate_soma.cpp
index b65b4ecb3a0de12d475c6380b24b43b824b65599..162242b56d9a201c42f26fa3b542285f03f01ee3 100644
--- a/tests/validate_soma.cpp
+++ b/tests/validate_soma.cpp
@@ -6,7 +6,7 @@
 #include <cell.hpp>
 #include <fvm.hpp>
 
-#include <json/src/json.hpp>
+#include <json.hpp>
 
 // compares results with those generated by nrn/soma.py
 // single compartment model with HH channels