diff --git a/src/pipewire/core.c b/src/pipewire/core.c
index 4954e3322..6cec5da76 100644
--- a/src/pipewire/core.c
+++ b/src/pipewire/core.c
@@ -460,6 +460,8 @@ struct pw_core *pw_core_new(struct pw_loop *main_loop, struct pw_properties *pro
 	this->info.props = &properties->dict;
 	this->info.name = name;
 
+	this->sc_pagesize = sysconf(_SC_PAGESIZE);
+
 	this->global = pw_core_add_global(this,
 					  NULL,
 					  NULL,
diff --git a/src/pipewire/private.h b/src/pipewire/private.h
index 3e534abcd..1a2c9dc4c 100644
--- a/src/pipewire/private.h
+++ b/src/pipewire/private.h
@@ -148,6 +148,8 @@ struct pw_core {
 	struct spa_support support[4];	/**< support for spa plugins */
 	uint32_t n_support;		/**< number of support items */
 
+	long sc_pagesize;
+
 	struct {
 		struct spa_graph graph;
 	} rt;