diff --git a/CHANGELOG.md b/CHANGELOG.md
index ee99df4a3..0e508d384 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Fixed
 - Fix Xcode 9.2 warning https://github.com/xcodeswift/xcproj/pull/209 by @keith
+- macOS CLI targets now have a nil extension, instead of an empty string https://github.com/xcodeswift/xcproj/pull/208 by @keith
 
 ## 2.0.0
 
diff --git a/Sources/xcproj/PBXProductType.swift b/Sources/xcproj/PBXProductType.swift
index 8daa0db2c..7b4b1f564 100644
--- a/Sources/xcproj/PBXProductType.swift
+++ b/Sources/xcproj/PBXProductType.swift
@@ -41,7 +41,7 @@ public enum PBXProductType: String, Decodable {
         case .appExtension, .tvExtension, .watchExtension, .watch2Extension, .messagesExtension, .stickerPack, .xcodeExtension:
             return "appex"
         case .commandLineTool:
-            return ""
+            return nil
         case .xpcService:
             return "xpc"
         case .ocUnitTestBundle: