diff --git a/connectivity/source/drivers/evoab2/EApi.cxx b/connectivity/source/drivers/evoab2/EApi.cxx
index ff1fd4fa4cab..ac77d564a049 100644
--- a/connectivity/source/drivers/evoab2/EApi.cxx
+++ b/connectivity/source/drivers/evoab2/EApi.cxx
@@ -111,7 +111,7 @@ static const ApiMap aClientApiMap38[] =
 template<size_t N> static bool
 tryLink( oslModule &aModule, const char *pName, const ApiMap (&pMap)[N])
 {
-    for (guint i = 0; i < N; ++i)
+    for (size_t i = 0; i < N; ++i)
     {
         SymbolFunc aMethod = reinterpret_cast<SymbolFunc>(osl_getFunctionSymbol
             (aModule, OUString::createFromAscii ( pMap[ i ].sym_name ).pData));
diff --git a/connectivity/source/drivers/evoab2/NStatement.cxx b/connectivity/source/drivers/evoab2/NStatement.cxx
index 9b8a101918fc..637d166fad03 100644
--- a/connectivity/source/drivers/evoab2/NStatement.cxx
+++ b/connectivity/source/drivers/evoab2/NStatement.cxx
@@ -215,7 +215,7 @@ void OCommonStatement::orderByAnalysis( const OSQLParseNode* _pOrderByClause, So
     const OSQLParseNode* pOrderList = _pOrderByClause->getByRule( OSQLParseNode::ordering_spec_commalist );
     ENSURE_OR_THROW( pOrderList, "unexpected parse tree structure" );
 
-    for ( sal_uInt32 i=0; i<pOrderList->count(); ++i )
+    for ( size_t i=0; i<pOrderList->count(); ++i )
     {
         const OSQLParseNode* pOrderBy = pOrderList->getChild(i);
         if ( !pOrderBy || !SQL_ISRULE( pOrderBy, ordering_spec ) )
diff --git a/connectivity/source/drivers/kab/korder.cxx b/connectivity/source/drivers/kab/korder.cxx
index 3948d5ee7b42..9418a56b1356 100644
--- a/connectivity/source/drivers/kab/korder.cxx
+++ b/connectivity/source/drivers/kab/korder.cxx
@@ -56,7 +56,7 @@ KabComplexOrder::KabComplexOrder()
 
 KabComplexOrder::~KabComplexOrder()
 {
-    for (sal_uInt32 i = 0; i < m_aOrders.size(); i++)
+    for (std::vector<KabOrder *>::size_type i = 0; i < m_aOrders.size(); i++)
         delete m_aOrders[i];
 }
 
@@ -67,7 +67,7 @@ void KabComplexOrder::addOrder(KabOrder *pOrder)
 
 sal_Int32 KabComplexOrder::compare(const ::KABC::Addressee &aAddressee1, const ::KABC::Addressee &aAddressee2) const
 {
-    for (sal_uInt32 i = 0; i < m_aOrders.size(); i++)
+    for (std::vector<KabOrder *>::size_type i = 0; i < m_aOrders.size(); i++)
     {
         const KabOrder *pOrder = m_aOrders[i];
         sal_Int32 result = pOrder->compare(aAddressee1, aAddressee2);