diff --git a/reactos/subsys/win32k/dib/dib16bpp.c b/reactos/subsys/win32k/dib/dib16bpp.c
index f8dd07078a1..8b19566e824 100644
--- a/reactos/subsys/win32k/dib/dib16bpp.c
+++ b/reactos/subsys/win32k/dib/dib16bpp.c
@@ -630,11 +630,11 @@ BOOLEAN DIB_16BPP_StretchBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
      BitsPerFormat(SourceSurf->iBitmapFormat), SourceRect->left, SourceRect->top, SourceRect->right, SourceRect->bottom,
      DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
 
-    SrcSizeY = SourceRect->bottom - SourceRect->top;
-    SrcSizeX = SourceRect->right - SourceRect->left;
+    SrcSizeY = SourceRect->bottom;
+    SrcSizeX = SourceRect->right;
   
-    DesSizeY = DestRect->bottom - DestRect->top;
-    DesSizeX = DestRect->right - DestRect->left;   
+    DesSizeY = DestRect->bottom;
+    DesSizeX = DestRect->right;     
    
 	zoomX = DesSizeX / SrcSizeX;
     if (zoomX==0) zoomX=1;
diff --git a/reactos/subsys/win32k/dib/dib1bpp.c b/reactos/subsys/win32k/dib/dib1bpp.c
index 8487cbf2fc2..b92f5f2d715 100644
--- a/reactos/subsys/win32k/dib/dib1bpp.c
+++ b/reactos/subsys/win32k/dib/dib1bpp.c
@@ -518,11 +518,11 @@ BOOLEAN DIB_1BPP_StretchBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
    int saveY;
    BOOLEAN DesIsBiggerY=FALSE;
 
-   SrcSizeY = SourceRect->bottom - SourceRect->top;
-   SrcSizeX = SourceRect->right - SourceRect->left;
-
-   DesSizeY = DestRect->bottom - DestRect->top;
-   DesSizeX = DestRect->right - DestRect->left;
+   SrcSizeY = SourceRect->bottom;
+    SrcSizeX = SourceRect->right;
+  
+    DesSizeY = DestRect->bottom;
+    DesSizeX = DestRect->right;  
 
    zoomX = DesSizeX / SrcSizeX;
    if (zoomX==0) zoomX=1;
diff --git a/reactos/subsys/win32k/dib/dib24bpp.c b/reactos/subsys/win32k/dib/dib24bpp.c
index 2dc2c1abf03..924f38d6b1f 100644
--- a/reactos/subsys/win32k/dib/dib24bpp.c
+++ b/reactos/subsys/win32k/dib/dib24bpp.c
@@ -513,11 +513,11 @@ BOOLEAN DIB_24BPP_StretchBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
    int saveY;
    BOOLEAN DesIsBiggerY=FALSE;
 
-   SrcSizeY = SourceRect->bottom - SourceRect->top;
-   SrcSizeX = SourceRect->right - SourceRect->left;
-
-   DesSizeY = DestRect->bottom - DestRect->top;
-   DesSizeX = DestRect->right - DestRect->left;
+   SrcSizeY = SourceRect->bottom;
+    SrcSizeX = SourceRect->right;
+  
+    DesSizeY = DestRect->bottom;
+    DesSizeX = DestRect->right;  
 
    zoomX = DesSizeX / SrcSizeX;
    if (zoomX==0) zoomX=1;
diff --git a/reactos/subsys/win32k/dib/dib32bpp.c b/reactos/subsys/win32k/dib/dib32bpp.c
index d19bd0f8914..c4df9da198d 100644
--- a/reactos/subsys/win32k/dib/dib32bpp.c
+++ b/reactos/subsys/win32k/dib/dib32bpp.c
@@ -557,11 +557,11 @@ BOOLEAN DIB_32BPP_StretchBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
             BitsPerFormat(SourceSurf->iBitmapFormat), SourceRect->left, SourceRect->top, SourceRect->right, 
             SourceRect->bottom, DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
 
-    SrcSizeY = SourceRect->bottom - SourceRect->top;
-    SrcSizeX = SourceRect->right - SourceRect->left;
+    SrcSizeY = SourceRect->bottom;
+    SrcSizeX = SourceRect->right;
   
-    DesSizeY = DestRect->bottom - DestRect->top;
-    DesSizeX = DestRect->right - DestRect->left; 
+    DesSizeY = DestRect->bottom;
+    DesSizeX = DestRect->right;   
 
     zoomX = DesSizeX / SrcSizeX;
     if (zoomX==0) zoomX=1;
diff --git a/reactos/subsys/win32k/dib/dib4bpp.c b/reactos/subsys/win32k/dib/dib4bpp.c
index 67b3572749c..d47ce230feb 100644
--- a/reactos/subsys/win32k/dib/dib4bpp.c
+++ b/reactos/subsys/win32k/dib/dib4bpp.c
@@ -397,11 +397,11 @@ BOOLEAN DIB_4BPP_StretchBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
    int saveY;
    BOOLEAN DesIsBiggerY=FALSE;
   
-   SrcSizeY = SourceRect->bottom - SourceRect->top;
-   SrcSizeX = SourceRect->right - SourceRect->left;
-
-   DesSizeY = DestRect->bottom - DestRect->top;
-   DesSizeX = DestRect->right - DestRect->left;
+    SrcSizeY = SourceRect->bottom;
+    SrcSizeX = SourceRect->right;
+  
+    DesSizeY = DestRect->bottom;
+    DesSizeX = DestRect->right;   
 
    zoomX = DesSizeX / SrcSizeX;
    if (zoomX==0) zoomX=1;
diff --git a/reactos/subsys/win32k/dib/dib8bpp.c b/reactos/subsys/win32k/dib/dib8bpp.c
index 0a015d57a20..32ab9ee312a 100644
--- a/reactos/subsys/win32k/dib/dib8bpp.c
+++ b/reactos/subsys/win32k/dib/dib8bpp.c
@@ -480,11 +480,11 @@ BOOLEAN DIB_8BPP_StretchBlt(SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
      BitsPerFormat(SourceSurf->iBitmapFormat), SourceRect->left, SourceRect->top, SourceRect->right, SourceRect->bottom,
      DestRect->left, DestRect->top, DestRect->right, DestRect->bottom);
 
-   SrcSizeY = SourceRect->bottom - SourceRect->top;
-   SrcSizeX = SourceRect->right - SourceRect->left;
-
-   DesSizeY = DestRect->bottom - DestRect->top;
-   DesSizeX = DestRect->right - DestRect->left;
+    SrcSizeY = SourceRect->bottom;
+    SrcSizeX = SourceRect->right;
+  
+    DesSizeY = DestRect->bottom;
+    DesSizeX = DestRect->right;   
 
    zoomX = DesSizeX / SrcSizeX;
    if (zoomX==0) zoomX=1;