diff --git a/unittests/test_cpp_standards.py b/unittests/test_cpp_standards.py
index eb28418..7c76c73 100644
--- a/unittests/test_cpp_standards.py
+++ b/unittests/test_cpp_standards.py
@@ -23,7 +23,8 @@ class Test(parser_test_case.parser_test_case_t):
         if "gccxml" in self.config.xml_generator:
             return True
 
-        parser.parse(["cpp_standards.hpp"], self.config)
+        parser.parse(["cpp_standards.hpp"], self.config,
+        parser.COMPILATION_MODE.ALL_AT_ONCE)
 
         if platform.system() != 'Windows':
             self.config.cflags = "-std=c++98"
@@ -33,7 +34,8 @@ class Test(parser_test_case.parser_test_case_t):
             parser.parse(["cpp_standards.hpp"], self.config)
 
         self.config.cflags = "-std=c++11"
-        parser.parse(["cpp_standards.hpp"], self.config)
+        parser.parse(["cpp_standards.hpp"], self.config,
+        parser.COMPILATION_MODE.ALL_AT_ONCE)
 
         # This is broken with llvm 3.6.2 (the one from homebrew)
         # It should work with never llvms but I keep the test disabled
diff --git a/unittests/test_non_copyable_recursive.py b/unittests/test_non_copyable_recursive.py
index cd78a9a..e18d58f 100644
--- a/unittests/test_non_copyable_recursive.py
+++ b/unittests/test_non_copyable_recursive.py
@@ -27,7 +27,7 @@ class Test(parser_test_case.parser_test_case_t):
         RuntimeError: maximum recursion depth exceeded while
         calling a Python object
         """
-        decls = parser.parse([self.header], self.config)
+        decls = parser.parse([self.header], self.config, parser.COMPILATION_MODE.ALL_AT_ONCE)
         global_ns = declarations.get_global_namespace(decls)
 
         # Description of the problem (before the fix):
@@ -52,7 +52,7 @@ class Test(parser_test_case.parser_test_case_t):
         RuntimeError: maximum recursion depth exceeded while
         calling a Python object
         """
-        decls = parser.parse([self.header], self.config)
+        decls = parser.parse([self.header], self.config, parser.COMPILATION_MODE.ALL_AT_ONCE)
         global_ns = declarations.get_global_namespace(decls)
 
         # Real life example of the bug. This leads to a similar error,
diff --git a/unittests/test_null_comparison.py b/unittests/test_null_comparison.py
index 51caf4a..787ae79 100644
--- a/unittests/test_null_comparison.py
+++ b/unittests/test_null_comparison.py
@@ -22,7 +22,7 @@ class Test(parser_test_case.parser_test_case_t):
         Test for None comparisons with default arguments
         """
 
-        decls = parser.parse([self.header], self.config)
+        decls = parser.parse([self.header], self.config, parser.COMPILATION_MODE.ALL_AT_ONCE)
         global_ns = declarations.get_global_namespace(decls)
 
         ns = global_ns.namespace("ns")
diff --git a/unittests/test_overrides.py b/unittests/test_overrides.py
index 9204efc..5ac1b25 100644
--- a/unittests/test_overrides.py
+++ b/unittests/test_overrides.py
@@ -23,7 +23,7 @@ class Test(parser_test_case.parser_test_case_t):
     def setUp(self):
 
         if not self.global_ns:
-            decls = parser.parse([self.header], self.config)
+            decls = parser.parse([self.header], self.config, parser.COMPILATION_MODE.ALL_AT_ONCE)
             Test.global_ns = declarations.get_global_namespace(decls)
             Test.xml_generator_from_xml_file = \
                 self.config.xml_generator_from_xml_file
diff --git a/unittests/test_pattern_parser.py b/unittests/test_pattern_parser.py
index 00a6805..4882c26 100644
--- a/unittests/test_pattern_parser.py
+++ b/unittests/test_pattern_parser.py
@@ -27,7 +27,7 @@ class Test(parser_test_case.parser_test_case_t):
         if self.config.xml_generator == "gccxml":
             return
 
-        decls = parser.parse([self.header], self.config)
+        decls = parser.parse([self.header], self.config, parser.COMPILATION_MODE.ALL_AT_ONCE)
 
         for decl in declarations.make_flatten(decls):
             if "myClass" in decl.name:
@@ -44,7 +44,7 @@ class Test(parser_test_case.parser_test_case_t):
         if self.config.xml_generator == "gccxml":
             return
 
-        decls = parser.parse([self.header], self.config)
+        decls = parser.parse([self.header], self.config, parser.COMPILATION_MODE.ALL_AT_ONCE)
         global_ns = declarations.get_global_namespace(decls)
         criteria = declarations.declaration_matcher(name="myClass")
         _ = declarations.matcher.find(criteria, global_ns)
diff --git a/unittests/test_smart_pointer.py b/unittests/test_smart_pointer.py
index e9183b7..4a85860 100644
--- a/unittests/test_smart_pointer.py
+++ b/unittests/test_smart_pointer.py
@@ -22,7 +22,7 @@ class Test(parser_test_case.parser_test_case_t):
     def setUp(self):
         if self.config.xml_generator == "gccxml":
             return
-        decls = parser.parse([self.header], self.config)
+        decls = parser.parse([self.header], self.config, parser.COMPILATION_MODE.ALL_AT_ONCE)
         self.global_ns = declarations.get_global_namespace(decls)
 
     def test_is_smart_pointer(self):