diff --git a/src/pulse/context.c b/src/pulse/context.c
index 37f81e9a9..7cf96f967 100644
--- a/src/pulse/context.c
+++ b/src/pulse/context.c
@@ -1106,7 +1106,7 @@ void pa_context_set_event_callback(pa_context *c, pa_context_event_cb_t cb, void
     c->event_userdata = userdata;
 }
 
-int pa_context_is_pending(pa_context *c) {
+int pa_context_is_pending(const pa_context *c) {
     pa_assert(c);
     pa_assert(PA_REFCNT_VALUE(c) >= 1);
 
diff --git a/src/pulse/context.h b/src/pulse/context.h
index cc96f419c..e6e100963 100644
--- a/src/pulse/context.h
+++ b/src/pulse/context.h
@@ -193,7 +193,7 @@ void pa_context_set_event_callback(pa_context *p, pa_context_event_cb_t cb, void
 int pa_context_errno(const pa_context *c);
 
 /** Return non-zero if some data is pending to be written to the connection */
-int pa_context_is_pending(pa_context *c);
+int pa_context_is_pending(const pa_context *c);
 
 /** Return the current context status */
 pa_context_state_t pa_context_get_state(const pa_context *c);