diff --git a/Hardware/HDD/SSDSandforce.cs b/Hardware/HDD/SSDSandforce.cs
index 1f0e800..ba1ab50 100644
--- a/Hardware/HDD/SSDSandforce.cs
+++ b/Hardware/HDD/SSDSandforce.cs
@@ -92,8 +92,11 @@ namespace OpenHardwareMonitor.Hardware.HDD {
           hostWritesToController = RawToInt(value.RawValue, value.AttrValue);
       }
       if (controllerWritesToNAND.HasValue && hostWritesToController.HasValue) {
-        writeAmplification.Value = 
-          controllerWritesToNAND.Value / hostWritesToController.Value;
+        if (hostWritesToController.Value > 0)
+          writeAmplification.Value =
+            controllerWritesToNAND.Value / hostWritesToController.Value;
+        else
+          writeAmplification.Value = 0;
         ActivateSensor(writeAmplification);
       }
     }
diff --git a/Properties/AssemblyVersion.cs b/Properties/AssemblyVersion.cs
index e9bcc49..fa7709b 100644
--- a/Properties/AssemblyVersion.cs
+++ b/Properties/AssemblyVersion.cs
@@ -37,5 +37,5 @@
 
 using System.Reflection;
 
-[assembly: AssemblyVersion("0.4.0.3")]
-[assembly: AssemblyInformationalVersion("0.4.0.3 Alpha")]
\ No newline at end of file
+[assembly: AssemblyVersion("0.4.0.4")]
+[assembly: AssemblyInformationalVersion("0.4.0.4 Alpha")]
\ No newline at end of file