diff --git a/Sources/XcodeGenKit/SourceGenerator.swift b/Sources/XcodeGenKit/SourceGenerator.swift
index 7ed90b3d..0b8f93b7 100644
--- a/Sources/XcodeGenKit/SourceGenerator.swift
+++ b/Sources/XcodeGenKit/SourceGenerator.swift
@@ -664,7 +664,7 @@ class SourceGenerator {
             sourceFiles.append(sourceFile)
 
         case .group:
-            if targetSource.optional && !Path(targetSource.path).exists {
+            if targetSource.optional && !path.exists {
                 // This group is missing, so if's optional just return an empty array
                 return []
             }