diff --git a/core/build.gradle b/core/build.gradle
index 9a4d413379f..c44ea7b4761 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -34,8 +34,8 @@ task jarFileTest(type: Test) {
     testClassesDirs = sourceSets.jarFileTest.output.classesDirs
     classpath = sourceSets.jarFileTest.runtimeClasspath
 
-    file(shadowJar.outputs.files.singleFile) // input for correct caching
-    systemProperty("jarFile", shadowJar.outputs.files.singleFile)
+    inputs.files(shadowJar).withPathSensitivity(PathSensitivity.RELATIVE)
+    systemProperty("jarFile", project.projectDir.toPath().relativize(shadowJar.outputs.files.singleFile.toPath()).toString())
 
     dependsOn(shadowJar)
 }