diff --git a/src/include/switch_ivr.h b/src/include/switch_ivr.h
index 19bdd5bebb..8a48ae1c31 100644
--- a/src/include/switch_ivr.h
+++ b/src/include/switch_ivr.h
@@ -123,7 +123,7 @@ SWITCH_DECLARE(switch_status) switch_ivr_speak_text(switch_core_session *session
 													char *tts_name,
 													char *voice_name,
 													char *timer_name,
-													unsigned int rate,
+													size_t rate,
 													switch_dtmf_callback_function dtmf_callback,
 													char *text,
 													void *buf,
diff --git a/src/switch_ivr.c b/src/switch_ivr.c
index e7dc6db7fc..52e753d273 100644
--- a/src/switch_ivr.c
+++ b/src/switch_ivr.c
@@ -386,7 +386,7 @@ SWITCH_DECLARE(switch_status) switch_ivr_speak_text(switch_core_session *session
 													char *tts_name,
 													char *voice_name,
 													char *timer_name,
-													unsigned int rate,
+													size_t rate,
 													switch_dtmf_callback_function dtmf_callback,
 													char *text,
 													void *buf,