diff --git a/2.x/trunk/plugins/DotNetTools/perfpage.c b/2.x/trunk/plugins/DotNetTools/perfpage.c
index 9e0da172b..ca4b83096 100644
--- a/2.x/trunk/plugins/DotNetTools/perfpage.c
+++ b/2.x/trunk/plugins/DotNetTools/perfpage.c
@@ -307,13 +307,17 @@ VOID UpdateCounterData(
                             PH_FORMAT format;
                             WCHAR formatBuffer[10];
 
-                            if (denomValue != 0)
+                            if (*denomValue != 0)
                             {
                                 PhInitFormatF(&format, (FLOAT)*value * 100 / (FLOAT)*denomValue, 2);
 
                                 if (PhFormatToBuffer(&format, 1, formatBuffer, sizeof(formatBuffer), NULL))
                                     PhSetListViewSubItem(countersLv, lvItemIndex, 1, formatBuffer);
                             }
+                            else
+                            {
+                                PhSetListViewSubItem(countersLv, lvItemIndex, 1, L"0.00");
+                            }
                         }
                         break;
                     }