diff --git a/lldb/test/Shell/Unwind/Inputs/call-asm.c b/lldb/test/Shell/Unwind/Inputs/call-asm.c
index 30d0069504172..b154c1ac1385d 100644
--- a/lldb/test/Shell/Unwind/Inputs/call-asm.c
+++ b/lldb/test/Shell/Unwind/Inputs/call-asm.c
@@ -1,2 +1,3 @@
-int asm_main();
+int asm_main() asm("asm_main");
+
 int main() { return asm_main(); }