diff --git a/src/mac/carbon/menu.cpp b/src/mac/carbon/menu.cpp
index 11cb225d9b..e07057a303 100644
--- a/src/mac/carbon/menu.cpp
+++ b/src/mac/carbon/menu.cpp
@@ -595,7 +595,7 @@ wxMenuBar::wxMenuBar(size_t count, wxMenu *menus[], const wxString titles[], lon
 
     m_titles.Alloc(count);
 
-    for ( int i = 0; i < count; i++ )
+    for ( size_t i = 0; i < count; i++ )
     {
         m_menus.Append(menus[i]);
         m_titles.Add(titles[i]);
diff --git a/src/mac/classic/menu.cpp b/src/mac/classic/menu.cpp
index 57dfedd102..641183222b 100644
--- a/src/mac/classic/menu.cpp
+++ b/src/mac/classic/menu.cpp
@@ -469,7 +469,7 @@ wxMenuBar::wxMenuBar(size_t count, wxMenu *menus[], const wxString titles[], lon
 
     m_titles.Alloc(count);
 
-    for ( int i = 0; i < count; i++ )
+    for ( size_t i = 0; i < count; i++ )
     {
         m_menus.Append(menus[i]);
         m_titles.Add(titles[i]);
diff --git a/src/motif/menu.cpp b/src/motif/menu.cpp
index 8868823110..c2d975ae6e 100644
--- a/src/motif/menu.cpp
+++ b/src/motif/menu.cpp
@@ -224,7 +224,7 @@ wxMenuBar::wxMenuBar(size_t n, wxMenu *menus[], const wxString titles[], long WX
 {
     Init();
 
-    for ( int i = 0; i < n; i++ )
+    for ( size_t i = 0; i < n; i++ )
     {
         m_menus.Append(menus[i]);
         m_titles.Add(titles[i]);
diff --git a/src/msw/menu.cpp b/src/msw/menu.cpp
index d92e189b24..12dfbd7133 100644
--- a/src/msw/menu.cpp
+++ b/src/msw/menu.cpp
@@ -703,7 +703,7 @@ wxMenuBar::wxMenuBar(size_t count, wxMenu *menus[], const wxString titles[], lon
 
     m_titles.Alloc(count);
 
-    for ( int i = 0; i < count; i++ )
+    for ( size_t i = 0; i < count; i++ )
     {
         m_menus.Append(menus[i]);
         m_titles.Add(titles[i]);