diff --git a/Contrib/Makensisw/makensisw.cpp b/Contrib/Makensisw/makensisw.cpp
index 09265a46..45f10de4 100644
--- a/Contrib/Makensisw/makensisw.cpp
+++ b/Contrib/Makensisw/makensisw.cpp
@@ -117,7 +117,7 @@ BOOL CALLBACK DialogProc(HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM lParam) {
       SendDlgItemMessage(hwndDlg,IDC_LOGWIN,WM_SETFONT,(WPARAM)hFont,0);
       RestoreWindowPos(g_sdata.hwnd);
       RestoreCompressor();
-      g_sdata.compressor =  (NCOMPRESSOR)-1;
+      g_sdata.compressor = COMPRESSOR_NONE_SELECTED;
 
       argSpaceSize = SetArgv((char *)GetCommandLine(), &argc, &argv);
       if(argc > 1) {
@@ -159,7 +159,7 @@ BOOL CALLBACK DialogProc(HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM lParam) {
       if (argSpaceSize)
         GlobalFree(argv);
 
-      if(g_sdata.compressor == (NCOMPRESSOR)-1) {
+      if(g_sdata.compressor == COMPRESSOR_NONE_SELECTED) {
         SetCompressor(g_sdata.default_compressor);
       }
       if(chooseCompressor) {
diff --git a/Contrib/Makensisw/makensisw.h b/Contrib/Makensisw/makensisw.h
index fa231319..7efcfb96 100644
--- a/Contrib/Makensisw/makensisw.h
+++ b/Contrib/Makensisw/makensisw.h
@@ -81,7 +81,8 @@ enum {
 };
 
 typedef enum {
-  COMPRESSOR_SCRIPT,
+  COMPRESSOR_NONE_SELECTED = -1,
+  COMPRESSOR_SCRIPT = 0,
   COMPRESSOR_ZLIB,
   COMPRESSOR_ZLIB_SOLID,
   COMPRESSOR_BZIP2,