diff --git a/NEWS b/NEWS
index 535b86e20..6f991836c 100644
--- a/NEWS
+++ b/NEWS
@@ -146,6 +146,7 @@ where XXXXXX is the bug number as listed below.
 405782  "VEX temporary storage exhausted" when attempting to debug slic3r-pe
 406198  none/tests/ppc64/test_isa_3_0_other test sporadically including CA
         bit in output.
+406352  cachegrind/callgrind fails ann tests because of missing a.c
 
 n-i-bz  add syswrap for PTRACE_GET|SET_THREAD_AREA on amd64.
 n-i-bz  Fix callgrind_annotate non deterministic order for equal total
diff --git a/cachegrind/tests/Makefile.am b/cachegrind/tests/Makefile.am
index f2f890294..571ae222a 100644
--- a/cachegrind/tests/Makefile.am
+++ b/cachegrind/tests/Makefile.am
@@ -10,8 +10,8 @@ DIST_SUBDIRS = x86 .
 
 dist_noinst_SCRIPTS = filter_stderr filter_cachesim_discards
 
-# Note that test.c is not compiled. It just serves as input for cg_annotate in
-# ann1 and ann2.
+# Note that test.c and a.c are not compiled.
+# They just serve as input for cg_annotate in ann1 and ann2.
 EXTRA_DIST = \
 	cgout-test \
 	ann1.post.exp ann1.stderr.exp ann1.vgtest \
@@ -20,7 +20,7 @@ EXTRA_DIST = \
 	clreq.vgtest clreq.stderr.exp \
 	dlclose.vgtest dlclose.stderr.exp dlclose.stdout.exp \
 	notpower2.vgtest notpower2.stderr.exp \
-	test.c \
+	test.c a.c \
 	wrap5.vgtest wrap5.stderr.exp wrap5.stdout.exp
 
 check_PROGRAMS = \