diff --git a/gcc/testsuite/gcc.dg/pr27953.C b/gcc/testsuite/gcc.dg/pr27953.c
similarity index 64%
rename from gcc/testsuite/gcc.dg/pr27953.C
rename to gcc/testsuite/gcc.dg/pr27953.c
index 1424e5468c0b..92a63d836866 100644
--- a/gcc/testsuite/gcc.dg/pr27953.C
+++ b/gcc/testsuite/gcc.dg/pr27953.c
@@ -1,4 +1,4 @@
 /* PR c/27953 */
 
 void foo(struct A a) {}  /* { dg-error "parameter list|definition|incomplete type" } */
-void foo() {}            /* { dg-error "redefinition" }
\ No newline at end of file
+void foo() {}            /* { dg-error "redefinition" } */