diff --git a/clang/test/Driver/clang-s-plugin.s b/clang/test/Driver/clang-s-plugin.s
deleted file mode 100644
index 81169b7bc5bbc8..00000000000000
--- a/clang/test/Driver/clang-s-plugin.s
+++ /dev/null
@@ -1,5 +0,0 @@
-// RUN: %clang -### -c -fpass-plugin=bar.so -fplugin=bar.so -fplugin-arg-bar-option -Werror %s 2>&1 | FileCheck %s
-
-// Plugins are only relevant for the -cc1 phase. No warning should be raised
-// when applied to assembly files. See GH #88173.
-// CHECK-NOT: argument unused during compilation
diff --git a/clang/test/Driver/plugin-driver-args.cpp b/clang/test/Driver/plugin-driver-args.cpp
index d6475b4b3d733a..6f0e6e2ba75251 100644
--- a/clang/test/Driver/plugin-driver-args.cpp
+++ b/clang/test/Driver/plugin-driver-args.cpp
@@ -20,3 +20,8 @@
 
 // RUN: %clang -fplugin=%llvmshlibdir/CallSuperAttr%pluginext -fplugin-arg-testname- -fsyntax-only %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-NO-PLUGIN-ARG2
 // CHECK-NO-PLUGIN-ARG2: missing plugin argument for plugin testname in -fplugin-arg-testname-
+
+// Plugins are only relevant for the -cc1 phase. No warning should be raised
+// when only using the assembler. See GH #88173.
+// RUN: %clang -c -fpass-plugin=bar.so -fplugin=bar.so -fplugin-arg-bar-option -Werror -x assembler %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-PLUGIN-ASM
+// CHECK-PLUGIN-ASM-NOT: argument unused during compilation