diff --git a/testtools/source/bridgetest/bridgetest.cxx b/testtools/source/bridgetest/bridgetest.cxx
index 74f89469b077..3931459fde9b 100644
--- a/testtools/source/bridgetest/bridgetest.cxx
+++ b/testtools/source/bridgetest/bridgetest.cxx
@@ -63,7 +63,6 @@
 #include "currentcontextchecker.hxx"
 #include "multi.hxx"
 
-using namespace rtl;
 using namespace osl;
 using namespace cppu;
 using namespace com::sun::star::uno;
@@ -72,6 +71,10 @@ using namespace com::sun::star::registry;
 using namespace com::sun::star::bridge;
 using namespace test::testtools::bridgetest;
 
+using ::rtl::OUString;
+using ::rtl::OString;
+using ::rtl::OUStringToOString;
+
 #define SERVICENAME     "com.sun.star.test.bridge.BridgeTest"
 #define IMPLNAME        "com.sun.star.comp.bridge.BridgeTest"
 
diff --git a/testtools/source/bridgetest/cppobj.cxx b/testtools/source/bridgetest/cppobj.cxx
index d765e14d33d4..9e767b6095e7 100644
--- a/testtools/source/bridgetest/cppobj.cxx
+++ b/testtools/source/bridgetest/cppobj.cxx
@@ -58,7 +58,6 @@
 #include "currentcontextchecker.hxx"
 #include "multi.hxx"
 
-using namespace rtl;
 using namespace osl;
 using namespace cppu;
 using namespace com::sun::star::uno;
@@ -66,6 +65,9 @@ using namespace com::sun::star::lang;
 using namespace com::sun::star::registry;
 using namespace test::testtools::bridgetest;
 
+using ::rtl::OUString;
+using ::rtl::OUStringToOString;
+
 #define SERVICENAME     "com.sun.star.test.bridge.CppTestObject"
 #define IMPLNAME        "com.sun.star.comp.bridge.CppTestObject"
 
diff --git a/testtools/source/performance/pseudo.cxx b/testtools/source/performance/pseudo.cxx
index 8f81138fb4f2..4309b0606b15 100644
--- a/testtools/source/performance/pseudo.cxx
+++ b/testtools/source/performance/pseudo.cxx
@@ -37,8 +37,7 @@
 #include <uno/mapping.h>
 #include <uno/lbnames.h>
 
-using namespace rtl;
-
+using ::rtl::OUString;
 
 namespace pseudo_uno
 {
diff --git a/testtools/source/performance/ubobject.cxx b/testtools/source/performance/ubobject.cxx
index 15397de078d1..731295d43ced 100644
--- a/testtools/source/performance/ubobject.cxx
+++ b/testtools/source/performance/ubobject.cxx
@@ -40,7 +40,6 @@
 
 #include <com/sun/star/test/performance/XPerformanceTest.hpp>
 
-using namespace rtl;
 using namespace osl;
 using namespace cppu;
 using namespace com::sun::star::uno;
@@ -48,6 +47,8 @@ using namespace com::sun::star::lang;
 using namespace com::sun::star::registry;
 using namespace com::sun::star::test::performance;
 
+using ::rtl::OUString;
+
 #define SERVICENAME     "com.sun.star.test.performance.PerformanceTestObject"
 #define IMPLNAME        "com.sun.star.comp.performance.PerformanceTestObject"
 
diff --git a/testtools/source/performance/ubtest.cxx b/testtools/source/performance/ubtest.cxx
index 4ea03d4dc1b6..e3b35c056082 100644
--- a/testtools/source/performance/ubtest.cxx
+++ b/testtools/source/performance/ubtest.cxx
@@ -72,7 +72,6 @@
 
 #define NLOOP 200000000
 
-using namespace rtl;
 using namespace osl;
 using namespace cppu;
 using namespace com::sun::star::uno;
@@ -83,6 +82,10 @@ using namespace com::sun::star::bridge;
 using namespace com::sun::star::container;
 using namespace com::sun::star::test::performance;
 
+using ::rtl::OUString;
+using ::rtl::OString;
+using ::rtl::OUStringToOString;
+
 #define SERVICENAME     "com.sun.star.test.performance.PerformanceTest"
 #define IMPLNAME        "com.sun.star.comp.performance.PerformanceTest"