diff --git a/Source/cmNinjaTargetGenerator.cxx b/Source/cmNinjaTargetGenerator.cxx
index e2642b295b..c52a01282f 100644
--- a/Source/cmNinjaTargetGenerator.cxx
+++ b/Source/cmNinjaTargetGenerator.cxx
@@ -1992,6 +1992,11 @@ void cmNinjaTargetGenerator::WriteSwiftObjectBuildStatement(
   std::string const moduleFilepath =
     this->ConvertToNinjaPath(cmStrCat(moduleDirectory, '/', moduleFilename));
 
+  vars.emplace("description",
+               cmStrCat("Building Swift Module '", moduleName, "' with ",
+                        sources.size(),
+                        sources.size() == 1 ? " source" : " sources"));
+
   bool const isSingleOutput = [this, compileMode]() -> bool {
     bool isMultiThread = false;
     if (cmValue numThreadStr =
diff --git a/Tests/RunCMake/Swift/IncrementalSwift-second-stdout.txt b/Tests/RunCMake/Swift/IncrementalSwift-second-stdout.txt
index 8e5b97c51c..ccd8aeebd8 100644
--- a/Tests/RunCMake/Swift/IncrementalSwift-second-stdout.txt
+++ b/Tests/RunCMake/Swift/IncrementalSwift-second-stdout.txt
@@ -1,3 +1,3 @@
-.*Building Swift object A.swiftmodule CMakeFiles(/|\\)A.dir(/|\\)a.swift.o(bj)?
-.*Building Swift object B.swiftmodule CMakeFiles(/|\\)B.dir(/|\\)b.swift.o(bj)?
+.*Building Swift Module 'A' with 1 source
+.*Building Swift Module 'B' with 1 source
 FAILED: B.swiftmodule CMakeFiles(/|\\)B.dir(/|\\)b.swift.o(bj)?