diff --git a/classes/tdesktop.cc b/classes/tdesktop.cc
index 38f1be4..041e0a0 100644
--- a/classes/tdesktop.cc
+++ b/classes/tdesktop.cc
@@ -142,8 +142,8 @@ TBackground *TDeskTop::initBackground( TRect r )
 static
 unsigned iSqr( unsigned i )
 {
-    unsigned res1 = 2;
-    unsigned res2 = i/res1;
+    int res1 = 2;
+    int res2 = i/res1;
     while( abs( res1 - res2 ) > 1 )
         {
         res1 = (res1 + res2)/2;
diff --git a/classes/tdisplay.cc b/classes/tdisplay.cc
index 9225d48..fd44ecd 100644
--- a/classes/tdisplay.cc
+++ b/classes/tdisplay.cc
@@ -360,10 +360,10 @@ void TDisplay::setArgv(int aArgc, char **aArgv, char **aEnvir)
  environment=aEnvir;
 }
 
-Boolean TDisplay::searchClosestRes(TScreenResolution *res, unsigned x,
-                                   unsigned y, unsigned cant, unsigned &pos)
+Boolean TDisplay::searchClosestRes(TScreenResolution *res, int x,
+                                   int y, unsigned cant, unsigned &pos)
 {
- unsigned i, minDif, indexMin, dif;
+ int i, minDif, indexMin, dif;
  int firstXMatch=-1;
  // Look for an exact match of width
  for (i=0; i<cant && res[i].x<x; i++)
diff --git a/classes/x11/x11src.cc b/classes/x11/x11src.cc
index 538457e..13dbca2 100644
--- a/classes/x11/x11src.cc
+++ b/classes/x11/x11src.cc
@@ -2536,7 +2536,7 @@ TScreenFont256 *TScreenX11::ChooseClosestFont(unsigned fW, unsigned fH)
     nFont=&font10x20;
  else
    {
-    unsigned target=fW*fH;
+    int target=fW*fH;
     int dif1=abs(8*16-target);
     int dif2=abs(10*20-target);
     if (dif1<dif2)
diff --git a/include/tv/screen.h b/include/tv/screen.h
index e143f1f..9e6a1b5 100644
--- a/include/tv/screen.h
+++ b/include/tv/screen.h
@@ -30,7 +30,7 @@ struct TScreenFont256
 
 struct TScreenResolution
 {
- unsigned x,y;
+ int x,y;
 };
 
 // Type for the callback called when the driver needs a new font.
@@ -152,7 +152,7 @@ public:
  static Boolean  setDontMoveHiddenCursor(Boolean value);
  static Boolean  getDontMoveHiddenCursor() { return opts1 & DontMoveHiddenCursor ? True : False; };
  // Helper to look for the closest resolution from a list
- static Boolean  searchClosestRes(TScreenResolution *res, unsigned x, unsigned y,
+ static Boolean  searchClosestRes(TScreenResolution *res, int x, int y,
                                   unsigned cant, unsigned &pos);
  // Returns the default palette
  static const TScreenColor *getDefaultPalette() { return PC_BIOSPalette; }