diff --git a/NEWS b/NEWS
index 8ddcab2f0..c26449a3e 100644
--- a/NEWS
+++ b/NEWS
@@ -59,6 +59,7 @@ n-i-bz  helgrind: If hg_cli__realloc fails, return NULL.
 427401  PPC ISA 3.1 support is missing, part 5
 384729  __libc_freeres inhibits cross-platform valgrind
 427404  PPC ISA 3.1 support is missing, part 6
+429692  unhandled ppc64le-linux syscall: 147 (getsid)
 
 Release 3.16.1 (?? June 2020)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/coregrind/m_syswrap/syswrap-ppc64-linux.c b/coregrind/m_syswrap/syswrap-ppc64-linux.c
index 7026e4ac6..6f682923b 100644
--- a/coregrind/m_syswrap/syswrap-ppc64-linux.c
+++ b/coregrind/m_syswrap/syswrap-ppc64-linux.c
@@ -772,7 +772,7 @@ static SyscallTableEntry syscall_table[] = {
 
    GENXY(__NR_readv,             sys_readv),              // 145
    GENX_(__NR_writev,            sys_writev),             // 146
-// _____(__NR_getsid,            sys_getsid),             // 147
+   GENX_(__NR_getsid,            sys_getsid),             // 147
    GENX_(__NR_fdatasync,         sys_fdatasync),          // 148
    LINXY(__NR__sysctl,           sys_sysctl),             // 149