win32/build/confutils.js | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/win32/build/confutils.js b/win32/build/confutils.js
index 0c88d13..207190c 100644
--- a/win32/build/confutils.js
+++ b/win32/build/confutils.js
@@ -405,12 +405,12 @@ function conf_process_args()
 			}
 		}
 		if (!found) {
-			INVALID_CONFIG_ARGS[INVALID_CONFIG_ARGS.length] = argname;
-
-			/*
-			STDERR.WriteLine("Unknown option " + argname + "; please try configure.js --help for a list of valid options");
-			WScript.Quit(2);
-			*/
+			if (PHP_SNAPSHOT_BUILD != 'no') {
+				STDERR.WriteLine("Unknown option " + argname + "; please try configure.js --help for a list of valid options");
+				WScript.Quit(2);
+			} else {
+				INVALID_CONFIG_ARGS[INVALID_CONFIG_ARGS.length] = argname;
+			}
 		}
 	}