diff --git a/UVAtlasTool/CmdLineHelpers.h b/UVAtlasTool/CmdLineHelpers.h
index 1283c220..b3af3ee5 100644
--- a/UVAtlasTool/CmdLineHelpers.h
+++ b/UVAtlasTool/CmdLineHelpers.h
@@ -23,6 +23,10 @@
 #include <set>
 #include <string>
 
+#ifndef TOOL_VERSION
+#error Define TOOL_VERSION before including this header
+#endif
+
 
 namespace Helpers
 {
@@ -164,7 +168,7 @@ namespace Helpers
 
         if (!*version || wcscmp(version, L"1.0.0.0") == 0)
         {
-            swprintf_s(version, L"%03d (library)", UVATLAS_VERSION);
+            swprintf_s(version, L"%03d (library)", TOOL_VERSION);
         }
 
         if (versionOnly)
diff --git a/UVAtlasTool/UVAtlas.cpp b/UVAtlasTool/UVAtlas.cpp
index 97879b63..06fb6625 100644
--- a/UVAtlasTool/UVAtlas.cpp
+++ b/UVAtlasTool/UVAtlas.cpp
@@ -56,6 +56,8 @@
 #include "DirectXTex.h"
 
 #include "Mesh.h"
+
+#define TOOL_VERSION UVATLAS_VERSION
 #include "CmdLineHelpers.h"
 
 //Uncomment to add support for OpenEXR (.exr)