diff --git a/include/media/AudioPolicyHelper.h b/include/media/AudioPolicyHelper.h
index 79231be..d39aa20 100644
--- a/include/media/AudioPolicyHelper.h
+++ b/include/media/AudioPolicyHelper.h
@@ -18,7 +18,8 @@
 
 #include <system/audio.h>
 
-static audio_stream_type_t audio_attributes_to_stream_type(const audio_attributes_t *attr)
+static inline
+audio_stream_type_t audio_attributes_to_stream_type(const audio_attributes_t *attr)
 {
     // flags to stream type mapping
     if ((attr->flags & AUDIO_FLAG_AUDIBILITY_ENFORCED) == AUDIO_FLAG_AUDIBILITY_ENFORCED) {
@@ -61,7 +62,8 @@
     }
 }
 
-static void stream_type_to_audio_attributes(audio_stream_type_t streamType,
+static inline
+void stream_type_to_audio_attributes(audio_stream_type_t streamType,
                                      audio_attributes_t *attr) {
     memset(attr, 0, sizeof(audio_attributes_t));