diff --git a/Sources/XCRemoteCache/Commands/Prepare/CCWrapperBuilder.swift b/Sources/XCRemoteCache/Commands/Prepare/CCWrapperBuilder.swift
index 35519d8..e2bb5a5 100644
--- a/Sources/XCRemoteCache/Commands/Prepare/CCWrapperBuilder.swift
+++ b/Sources/XCRemoteCache/Commands/Prepare/CCWrapperBuilder.swift
@@ -436,7 +436,8 @@ class TemplateBasedCCWrapperBuilder: CCWrapperBuilder {
                     isSuffixed(argv[i],".cc") ||
                     isSuffixed(argv[i],".cpp") ||
                     isSuffixed(argv[i],".c++") ||
-                    isSuffixed(argv[i],".cxx")
+                    isSuffixed(argv[i],".cxx") ||
+                    isSuffixed(argv[i],".s")
                 ) {
                     // a full list of extensions is taken from https://clang.llvm.org/docs/ClangFormatStyleOptions.html
                     // support for .m,.mm,.c,.cc,.cpp,.c++,.cxx input files