diff --git a/tests/modcc/test_kinetic_rewriter.cpp b/tests/modcc/test_kinetic_rewriter.cpp
index c242fe8f872a563219e436f340e694254daffd49..8ec3173a509102e75472096bff129fa2ca28b096 100644
--- a/tests/modcc/test_kinetic_rewriter.cpp
+++ b/tests/modcc/test_kinetic_rewriter.cpp
@@ -9,6 +9,7 @@
 #include "expr_expand.hpp"
 #include "test.hpp"
 
+using namespace nest::mc;
 
 stmt_list_type& proc_statements(Expression *e) {
     if (!e || !e->is_symbol() || ! e->is_symbol()->is_procedure()) {
@@ -95,4 +96,3 @@ TEST(KineticRewriter, equiv) {
     EXPECT_EQ(deriv_map["b'"], kin_map["b'"]);
     EXPECT_EQ(deriv_map["c'"], kin_map["c'"]);
 }
-
diff --git a/tests/modcc/test_optimization.cpp b/tests/modcc/test_optimization.cpp
index 14fba4292d2b0f7f57bc1fbeaff5d5aa0e37c1fc..79102bd2c8b4b335b91066cd7c14232d834036b6 100644
--- a/tests/modcc/test_optimization.cpp
+++ b/tests/modcc/test_optimization.cpp
@@ -5,6 +5,8 @@
 #include "constantfolder.hpp"
 #include "modccutil.hpp"
 
+using namespace nest::mc;
+
 TEST(Optimizer, constant_folding) {
     auto v = util::make_unique<ConstantFolderVisitor>();
     {
diff --git a/tests/modcc/test_visitors.cpp b/tests/modcc/test_visitors.cpp
index 0ec254e8472fb565bf8810a662f62259dc2bb11b..e2b7dd7caf055cee0bcafeac18f74ddeff8dc9d5 100644
--- a/tests/modcc/test_visitors.cpp
+++ b/tests/modcc/test_visitors.cpp
@@ -10,6 +10,8 @@
  * visitors
  **************************************************************/
 
+using namespace nest::mc;
+
 TEST(FlopVisitor, basic) {
     {
     auto visitor = util::make_unique<FlopVisitor>();