diff --git a/o3tl/qa/cow_wrapper_clients.hxx b/o3tl/qa/cow_wrapper_clients.hxx
index 7750b71845d0..e68dc231e424 100644
--- a/o3tl/qa/cow_wrapper_clients.hxx
+++ b/o3tl/qa/cow_wrapper_clients.hxx
@@ -20,8 +20,8 @@
 #ifndef INCLUDED_O3TL_QA_COW_WRAPPER_CLIENTS_HXX
 #define INCLUDED_O3TL_QA_COW_WRAPPER_CLIENTS_HXX
 
-#include "o3tl/cow_wrapper.hxx"
-#include "cppunit/extensions/HelperMacros.h"
+#include <o3tl/cow_wrapper.hxx>
+#include <cppunit/extensions/HelperMacros.h>
 #include <assert.h>
 
 /* Definition of Cow_Wrapper_Clients classes */
diff --git a/o3tl/qa/test-cow_wrapper.cxx b/o3tl/qa/test-cow_wrapper.cxx
index 1ec5f71ee603..3d81966ce46c 100644
--- a/o3tl/qa/test-cow_wrapper.cxx
+++ b/o3tl/qa/test-cow_wrapper.cxx
@@ -18,10 +18,10 @@
  */
 
 #include <sal/types.h>
-#include "cppunit/TestAssert.h"
-#include "cppunit/TestFixture.h"
-#include "cppunit/extensions/HelperMacros.h"
-#include "cppunit/plugin/TestPlugIn.h"
+#include <cppunit/TestAssert.h>
+#include <cppunit/TestFixture.h>
+#include <cppunit/extensions/HelperMacros.h>
+#include <cppunit/plugin/TestPlugIn.h>
 
 #include "cow_wrapper_clients.hxx"
 
diff --git a/o3tl/qa/test-lru_map.cxx b/o3tl/qa/test-lru_map.cxx
index 37fc8a4f6788..096b21ec5189 100644
--- a/o3tl/qa/test-lru_map.cxx
+++ b/o3tl/qa/test-lru_map.cxx
@@ -9,9 +9,9 @@
  */
 
 #include <sal/types.h>
-#include "cppunit/TestAssert.h"
-#include "cppunit/TestFixture.h"
-#include "cppunit/extensions/HelperMacros.h"
+#include <cppunit/TestAssert.h>
+#include <cppunit/TestFixture.h>
+#include <cppunit/extensions/HelperMacros.h>
 
 #include <o3tl/lru_map.hxx>
 
diff --git a/o3tl/qa/test-sorted_vector.cxx b/o3tl/qa/test-sorted_vector.cxx
index 9b1915a99754..713cb185fa48 100644
--- a/o3tl/qa/test-sorted_vector.cxx
+++ b/o3tl/qa/test-sorted_vector.cxx
@@ -8,9 +8,9 @@
  */
 
 #include <memory>
-#include "cppunit/TestAssert.h"
-#include "cppunit/TestFixture.h"
-#include "cppunit/extensions/HelperMacros.h"
+#include <cppunit/TestAssert.h>
+#include <cppunit/TestFixture.h>
+#include <cppunit/extensions/HelperMacros.h>
 
 #include <o3tl/sorted_vector.hxx>
 
diff --git a/o3tl/qa/test-typed_flags.cxx b/o3tl/qa/test-typed_flags.cxx
index 0612fc190cbe..e9c7bb6b7d2c 100644
--- a/o3tl/qa/test-typed_flags.cxx
+++ b/o3tl/qa/test-typed_flags.cxx
@@ -7,9 +7,9 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
 
-#include "cppunit/TestAssert.h"
-#include "cppunit/TestFixture.h"
-#include "cppunit/extensions/HelperMacros.h"
+#include <cppunit/TestAssert.h>
+#include <cppunit/TestFixture.h>
+#include <cppunit/extensions/HelperMacros.h>
 
 #include <o3tl/typed_flags_set.hxx>
 
diff --git a/o3tl/qa/test-vector_pool.cxx b/o3tl/qa/test-vector_pool.cxx
index 91cdcf9ad9fb..78975e4d5dc0 100644
--- a/o3tl/qa/test-vector_pool.cxx
+++ b/o3tl/qa/test-vector_pool.cxx
@@ -18,9 +18,9 @@
  */
 
 #include <sal/types.h>
-#include "cppunit/TestAssert.h"
-#include "cppunit/TestFixture.h"
-#include "cppunit/extensions/HelperMacros.h"
+#include <cppunit/TestAssert.h>
+#include <cppunit/TestFixture.h>
+#include <cppunit/extensions/HelperMacros.h>
 
 #include <o3tl/vector_pool.hxx>