diff --git a/src/audio/google/google_ctc_audio_processing.c b/src/audio/google/google_ctc_audio_processing.c
index e746d14480cd..12ecac66f8a7 100644
--- a/src/audio/google/google_ctc_audio_processing.c
+++ b/src/audio/google/google_ctc_audio_processing.c
@@ -444,7 +444,7 @@ static int ctc_process(struct processing_module *mod,
 	return 0;
 }
 
-static struct module_interface google_ctc_audio_processing_interface = {
+static const struct module_interface google_ctc_audio_processing_interface = {
 	.init  = ctc_init,
 	.free = ctc_free,
 	.process_audio_stream = ctc_process,
diff --git a/src/audio/google/google_rtc_audio_processing.c b/src/audio/google/google_rtc_audio_processing.c
index 78354123b1ec..c84cadb4c5c8 100644
--- a/src/audio/google/google_rtc_audio_processing.c
+++ b/src/audio/google/google_rtc_audio_processing.c
@@ -838,7 +838,7 @@ static int mod_process(struct processing_module *mod, struct sof_source **source
 	return 0;
 }
 
-static struct module_interface google_rtc_audio_processing_interface = {
+static const struct module_interface google_rtc_audio_processing_interface = {
 	.init  = google_rtc_audio_processing_init,
 	.free = google_rtc_audio_processing_free,
 	.process = mod_process,