diff --git a/src/pulse/scache.c b/src/pulse/scache.c
index de7b41120..d393229b5 100644
--- a/src/pulse/scache.c
+++ b/src/pulse/scache.c
@@ -205,7 +205,7 @@ pa_operation *pa_context_play_sample(pa_context *c, const char *name, const char
     return o;
 }
 
-pa_operation *pa_context_play_sample_with_proplist(pa_context *c, const char *name, const char *dev, pa_volume_t volume, pa_proplist *p, pa_context_play_sample_cb_t cb, void *userdata) {
+pa_operation *pa_context_play_sample_with_proplist(pa_context *c, const char *name, const char *dev, pa_volume_t volume, const pa_proplist *p, pa_context_play_sample_cb_t cb, void *userdata) {
     pa_operation *o;
     pa_tagstruct *t;
     uint32_t tag;
@@ -237,9 +237,9 @@ pa_operation *pa_context_play_sample_with_proplist(pa_context *c, const char *na
     if (p)
         pa_tagstruct_put_proplist(t, p);
     else {
-        p = pa_proplist_new();
-        pa_tagstruct_put_proplist(t, p);
-        pa_proplist_free(p);
+        pa_proplist *empty_proplist = pa_proplist_new();
+        pa_tagstruct_put_proplist(t, empty_proplist);
+        pa_proplist_free(empty_proplist);
     }
 
     pa_pstream_send_tagstruct(c->pstream, t);
diff --git a/src/pulse/scache.h b/src/pulse/scache.h
index e4b82bc7e..1be719837 100644
--- a/src/pulse/scache.h
+++ b/src/pulse/scache.h
@@ -116,7 +116,7 @@ pa_operation* pa_context_play_sample_with_proplist(
         const char *name                /**< Name of the sample to play */,
         const char *dev                 /**< Sink to play this sample on */,
         pa_volume_t volume              /**< Volume to play this sample with. Starting with 0.9.15 you may pass here PA_VOLUME_INVALID which will leave the decision about the volume to the server side, which is a good idea.  */ ,
-        pa_proplist *proplist           /**< Property list for this sound. The property list of the cached entry will have this merged into it. */,
+        const pa_proplist *proplist     /**< Property list for this sound. The property list of the cached entry will have this merged into it. */,
         pa_context_play_sample_cb_t cb  /**< Call this function after successfully starting playback, or NULL */,
         void *userdata                  /**< Userdata to pass to the callback */);