diff --git a/error-prone-contrib/src/test/java/tech/picnic/errorprone/bugpatterns/ErrorProneTestHelperSourceFormatCheckTest.java b/error-prone-contrib/src/test/java/tech/picnic/errorprone/bugpatterns/ErrorProneTestHelperSourceFormatCheckTest.java
index 62b06be3bbe..c774fe5069b 100644
--- a/error-prone-contrib/src/test/java/tech/picnic/errorprone/bugpatterns/ErrorProneTestHelperSourceFormatCheckTest.java
+++ b/error-prone-contrib/src/test/java/tech/picnic/errorprone/bugpatterns/ErrorProneTestHelperSourceFormatCheckTest.java
@@ -33,13 +33,13 @@ void identification() {
             "        // BUG: Diagnostic contains: No source code provided",
             "        .addSourceLines(\"A.java\")",
             "        // BUG: Diagnostic contains: Source code is malformed:",
-            "        .addSourceLines(\"A.java\", \"class A {\")",
+            "        .addSourceLines(\"B.java\", \"class B {\")",
             "        // Well-formed code, so not flagged.",
-            "        .addSourceLines(\"A.java\", \"class A {}\")",
+            "        .addSourceLines(\"C.java\", \"class C {}\")",
             "        // Malformed code, but not compile-time constant, so not flagged.",
-            "        .addSourceLines(\"A.java\", \"class A {\" + getClass())",
+            "        .addSourceLines(\"D.java\", \"class D {\" + getClass())",
             "        // BUG: Diagnostic contains: Test code should follow the Google Java style",
-            "        .addSourceLines(\"A.java\", \"class A { }\")",
+            "        .addSourceLines(\"E.java\", \"class E { }\")",
             "        .doTest();",
             "",
             "    refactoringTestHelper",