diff --git a/2.10/Changes.txt b/2.10/Changes.txt
index 55fa280..98f5dc5 100644
--- a/2.10/Changes.txt
+++ b/2.10/Changes.txt
@@ -5,6 +5,7 @@ B1116907 Values Editing events
 + FR1183940 Added triangle rotation functions in the editors popup menu.
 + Added gradient drawing in a tooltip form in the gradient browser window.
 + Editor window now has controls for precise moving and rotating triangles.
+Fixed a bug causing floating point errors on big unzooming and other editing tasks.
 
 2.02g
 + Delphi2005 Project
diff --git a/2.10/Source/Render64.pas b/2.10/Source/Render64.pas
index 806412d..8f128b6 100644
--- a/2.10/Source/Render64.pas
+++ b/2.10/Source/Render64.pas
@@ -404,8 +404,11 @@ begin
     if FStop then
       Exit;
 
-    if (i and $F = 0) then
-      Progress(i / nrbatches);
+    if ((i and $F) = 0) then
+      if nrbatches > 0 then
+        Progress(i / nrbatches)
+      else
+        Progress(0);
 
     // generate points
 {$IFDEF TESTVARIANT}