diff --git a/src/pulse/channelmap.c b/src/pulse/channelmap.c
index 6308ab55e..8976072a4 100644
--- a/src/pulse/channelmap.c
+++ b/src/pulse/channelmap.c
@@ -36,7 +36,7 @@
 
 #include "channelmap.h"
 
-const char *const table[PA_CHANNEL_POSITION_MAX] = {
+static const char *const table[PA_CHANNEL_POSITION_MAX] = {
     [PA_CHANNEL_POSITION_MONO] = "mono",
 
     [PA_CHANNEL_POSITION_FRONT_CENTER] = "front-center",
@@ -99,7 +99,7 @@ const char *const table[PA_CHANNEL_POSITION_MAX] = {
     [PA_CHANNEL_POSITION_TOP_REAR_RIGHT] = "top-rear-right"
 };
 
-const char *const pretty_table[PA_CHANNEL_POSITION_MAX] = {
+static const char *const pretty_table[PA_CHANNEL_POSITION_MAX] = {
     [PA_CHANNEL_POSITION_MONO] = N_("Mono"),
 
     [PA_CHANNEL_POSITION_FRONT_CENTER] = N_("Front Center"),