diff --git a/odk/source/unoapploader/win/unoapploader.c b/odk/source/unoapploader/win/unoapploader.c
index 990b00259d74..762b554744b3 100644
--- a/odk/source/unoapploader/win/unoapploader.c
+++ b/odk/source/unoapploader/win/unoapploader.c
@@ -81,6 +81,7 @@ int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
     char* value = NULL;
     char* envstr = NULL;
     char* cmdline = NULL;
+    int size;
     STARTUPINFO startup_info;
     PROCESS_INFORMATION process_info;
     BOOL bCreate;
@@ -229,7 +230,7 @@ int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
          * note that this only affects the environment variable of the current
          * process, the command processor's environment is not changed
          */
-        int size = strlen( ENVVARNAME ) + strlen( "=" ) + strlen( path ) + 1;
+        size = strlen( ENVVARNAME ) + strlen( "=" ) + strlen( path ) + 1;
         if ( value != NULL )
             size += strlen( PATHSEPARATOR ) + strlen( value );
         envstr = (char*) malloc( size );