diff --git a/ext/win32/lib/win32/sspi.rb b/ext/win32/lib/win32/sspi.rb
index 20205fd4d6..9dbd4377a4 100644
--- a/ext/win32/lib/win32/sspi.rb
+++ b/ext/win32/lib/win32/sspi.rb
@@ -204,7 +204,7 @@ module Win32
       def ==(other)
         if other.is_a?(SSPIResult)
           @value == other.value
-        elsif other.is_a?(Fixnum)
+        elsif other.is_a?(Integer)
           @value == @@map[other]
         else
           false