diff --git a/test/Profiler/coverage_relative_path.swift b/test/Profiler/coverage_relative_path.swift
index b6b1db136dd9a..2e5683b382abf 100644
--- a/test/Profiler/coverage_relative_path.swift
+++ b/test/Profiler/coverage_relative_path.swift
@@ -2,14 +2,14 @@
 // clean directory, put the source there, and cd into it.
 // RUN: rm -rf %t
 // RUN: mkdir -p %t/foo/bar/baz
-// RUN: cp %s %t/foo/bar/baz/coverage_relative_path.swift
+// RUN: echo "func coverage() {}" > %t/foo/bar/baz/coverage_relative_path.swift
 // RUN: cd %t/foo/bar
 
-// RUN: %target-swift-frontend -profile-generate -profile-coverage-mapping -Xllvm -enable-name-compression=false -emit-ir baz/coverage_relative_path.swift | %FileCheck -check-prefix=ABSOLUTE %s
+// RUN: %target-swift-frontend -profile-generate -profile-coverage-mapping -Xllvm -enable-name-compression=false -emit-ir %/t/foo/bar/baz/coverage_relative_path.swift | %FileCheck -check-prefix=ABSOLUTE %s
 //
 // ABSOLUTE: @__llvm_coverage_mapping = {{.*"\\01.*foo.*bar.*baz.*coverage_relative_path\.swift}}
 
-// RUN: %target-swift-frontend -profile-generate -profile-coverage-mapping -Xllvm -enable-name-compression=false -coverage-prefix-map $PWD=. -emit-ir baz/coverage_relative_path.swift | %FileCheck -check-prefix=RELATIVE %s
+// RUN: %target-swift-frontend -profile-generate -profile-coverage-mapping -Xllvm -enable-name-compression=false -coverage-prefix-map %/t/foo/bar=. -emit-ir %/t/foo/bar/baz/coverage_relative_path.swift | %FileCheck -check-prefix=RELATIVE %s
 //
 // RELATIVE: @__llvm_coverage_mapping = {{.*"\\01[^/]*}}.{{/|\\}}baz{{.*coverage_relative_path\.swift}}