diff --git a/simgear/scene/util/parse_color_test.cxx b/simgear/scene/util/parse_color_test.cxx
index 0e6fcdd0..0db7f12c 100644
--- a/simgear/scene/util/parse_color_test.cxx
+++ b/simgear/scene/util/parse_color_test.cxx
@@ -7,7 +7,7 @@
 #include <simgear/misc/test_macros.hxx>
 
 #include <iostream>
-
+#include <memory>
 
 #define VERIFY_COLOR(str, r, g, b, a) \
   SG_VERIFY(simgear::parseColor(str, color)) \
@@ -28,7 +28,7 @@ int main (int ac, char ** av)
   SGPropertyNode color_node, color_arg;
   color_arg.setStringValue("#000000");
 
-  simgear::PropertyInterpolator* interp = new simgear::ColorInterpolator;
+  auto interp = std::unique_ptr<simgear::ColorInterpolator>(new simgear::ColorInterpolator);
   interp->reset(color_arg);
 
   interp->update(color_node, 0.5); // with no color it should immediately set to the target
diff --git a/simgear/structure/expression_test.cxx b/simgear/structure/expression_test.cxx
index 0ee10154..178e47d9 100644
--- a/simgear/structure/expression_test.cxx
+++ b/simgear/structure/expression_test.cxx
@@ -14,6 +14,7 @@
 #include <cassert>
 #include <cstdlib>
 #include <cstring>
+#include <memory>
 
 #include <simgear/misc/test_macros.hxx>
 #include <simgear/structure/exception.hxx>
@@ -81,8 +82,8 @@ void testParse()
               "</sqr>"
         "</PropertyList>";
     
-    SGPropertyNode* desc = new SGPropertyNode;
-    readProperties(xml2, strlen(xml2), desc);
+    auto desc = std::unique_ptr<SGPropertyNode>(new SGPropertyNode);
+    readProperties(xml2, strlen(xml2), desc.get());
     
     SGSharedPtr<SGExpressiond> expr = SGReadDoubleExpression(propertyTree, desc->getChild(0));
     
@@ -107,4 +108,3 @@ int main(int argc, char* argv[])
     cout << __FILE__ << ": All tests passed" << endl;
     return EXIT_SUCCESS;
 }
-
diff --git a/simgear/structure/state_machine_test.cxx b/simgear/structure/state_machine_test.cxx
index 558c72b8..167c3b0a 100644
--- a/simgear/structure/state_machine_test.cxx
+++ b/simgear/structure/state_machine_test.cxx
@@ -14,6 +14,7 @@
 #include <cassert>
 #include <cstdlib>
 #include <cstring>
+#include <memory>
 
 #include "StateMachine.hxx"
 
@@ -230,11 +231,11 @@ void testParse()
         </state>
     </PropertyList>)";
     
-    SGPropertyNode* desc = new SGPropertyNode;
-    readProperties(xml, strlen(xml), desc);
+    auto desc = std::unique_ptr<SGPropertyNode>(new SGPropertyNode);
+    readProperties(xml, strlen(xml), desc.get());
     
     SGPropertyNode_ptr root(new SGPropertyNode);
-    StateMachine_ptr sm = StateMachine::createFromPlist(desc, root);
+    StateMachine_ptr sm = StateMachine::createFromPlist(desc.get(), root);
     
     SG_VERIFY(sm->findStateByName("one") != NULL);
     SG_VERIFY(sm->findStateByName("two") != NULL);
@@ -250,4 +251,3 @@ int main(int argc, char* argv[])
     cout << __FILE__ << ": All tests passed" << endl;
     return EXIT_SUCCESS;
 }
-