diff --git a/pcbnew/class_board.cpp b/pcbnew/class_board.cpp
index 350bba5709..0091e6def9 100644
--- a/pcbnew/class_board.cpp
+++ b/pcbnew/class_board.cpp
@@ -2747,7 +2747,7 @@ void BOARD::ReplaceNetlist( NETLIST& aNetlist, bool aDeleteSinglePadNets,
                 ++padCount[net];
         }
 
-        for( i = 0; i < connAlgo->NetCount(); ++i )
+        for( i = 0; i < (unsigned)connAlgo->NetCount(); ++i )
         {
             // First condition: only one pad in the net
             if( padCount[i] == 1 )
diff --git a/pcbnew/connectivity.cpp b/pcbnew/connectivity.cpp
index aa093179d2..750f84ffe6 100644
--- a/pcbnew/connectivity.cpp
+++ b/pcbnew/connectivity.cpp
@@ -568,7 +568,7 @@ const std::vector<BOARD_CONNECTED_ITEM*> CONNECTIVITY_DATA::GetConnectedItems(
 
 RN_NET* CONNECTIVITY_DATA::GetRatsnestForNet( int aNet )
 {
-    if ( aNet < 0 || aNet >= m_nets.size() )
+    if ( aNet < 0 || aNet >= (int)m_nets.size() )
     {
         return nullptr;
     }