diff --git a/src/modules/module-protocol-pulse/modules/module-echo-cancel.c b/src/modules/module-protocol-pulse/modules/module-echo-cancel.c
index dd144daa8..5c9a7adf6 100644
--- a/src/modules/module-protocol-pulse/modules/module-echo-cancel.c
+++ b/src/modules/module-protocol-pulse/modules/module-echo-cancel.c
@@ -121,6 +121,11 @@ static int module_echo_cancel_unload(struct client *client, struct module *modul
 		pw_impl_module_destroy(d->mod);
 		d->mod = NULL;
 	}
+
+	pw_properties_free(d->props);
+	pw_properties_free(d->source_props);
+	pw_properties_free(d->sink_props);
+
 	return 0;
 }
 
diff --git a/src/modules/module-protocol-pulse/modules/module-ladspa-sink.c b/src/modules/module-protocol-pulse/modules/module-ladspa-sink.c
index 62ea18229..e35d4305b 100644
--- a/src/modules/module-protocol-pulse/modules/module-ladspa-sink.c
+++ b/src/modules/module-protocol-pulse/modules/module-ladspa-sink.c
@@ -124,6 +124,10 @@ static int module_ladspa_sink_unload(struct client *client, struct module *modul
 		pw_impl_module_destroy(d->mod);
 		d->mod = NULL;
 	}
+
+	pw_properties_free(d->capture_props);
+	pw_properties_free(d->playback_props);
+
 	return 0;
 }
 
diff --git a/src/modules/module-protocol-pulse/modules/module-ladspa-source.c b/src/modules/module-protocol-pulse/modules/module-ladspa-source.c
index 8500f1880..fb50e97a7 100644
--- a/src/modules/module-protocol-pulse/modules/module-ladspa-source.c
+++ b/src/modules/module-protocol-pulse/modules/module-ladspa-source.c
@@ -124,6 +124,10 @@ static int module_ladspa_source_unload(struct client *client, struct module *mod
 		pw_impl_module_destroy(d->mod);
 		d->mod = NULL;
 	}
+
+	pw_properties_free(d->capture_props);
+	pw_properties_free(d->playback_props);
+
 	return 0;
 }
 
diff --git a/src/modules/module-protocol-pulse/modules/module-loopback.c b/src/modules/module-protocol-pulse/modules/module-loopback.c
index 777f9c3c5..ba64a4588 100644
--- a/src/modules/module-protocol-pulse/modules/module-loopback.c
+++ b/src/modules/module-protocol-pulse/modules/module-loopback.c
@@ -112,6 +112,10 @@ static int module_loopback_unload(struct client *client, struct module *module)
 		pw_impl_module_destroy(d->mod);
 		d->mod = NULL;
 	}
+
+	pw_properties_free(d->capture_props);
+	pw_properties_free(d->playback_props);
+
 	return 0;
 }
 
diff --git a/src/modules/module-protocol-pulse/modules/module-remap-sink.c b/src/modules/module-protocol-pulse/modules/module-remap-sink.c
index 7da638e20..cdc5409a8 100644
--- a/src/modules/module-protocol-pulse/modules/module-remap-sink.c
+++ b/src/modules/module-protocol-pulse/modules/module-remap-sink.c
@@ -108,6 +108,10 @@ static int module_remap_sink_unload(struct client *client, struct module *module
 		pw_impl_module_destroy(d->mod);
 		d->mod = NULL;
 	}
+
+	pw_properties_free(d->capture_props);
+	pw_properties_free(d->playback_props);
+
 	return 0;
 }
 
diff --git a/src/modules/module-protocol-pulse/modules/module-remap-source.c b/src/modules/module-protocol-pulse/modules/module-remap-source.c
index a7551a1e5..03c6a62c2 100644
--- a/src/modules/module-protocol-pulse/modules/module-remap-source.c
+++ b/src/modules/module-protocol-pulse/modules/module-remap-source.c
@@ -108,6 +108,10 @@ static int module_remap_source_unload(struct client *client, struct module *modu
 		pw_impl_module_destroy(d->mod);
 		d->mod = NULL;
 	}
+
+	pw_properties_free(d->capture_props);
+	pw_properties_free(d->playback_props);
+
 	return 0;
 }
 
diff --git a/src/modules/module-protocol-pulse/modules/module-simple-protocol-tcp.c b/src/modules/module-protocol-pulse/modules/module-simple-protocol-tcp.c
index ff25629bc..f481fe9ae 100644
--- a/src/modules/module-protocol-pulse/modules/module-simple-protocol-tcp.c
+++ b/src/modules/module-protocol-pulse/modules/module-simple-protocol-tcp.c
@@ -83,6 +83,8 @@ static int module_simple_protocol_tcp_unload(struct client *client, struct modul
 
 	pw_impl_module_destroy(d->mod);
 
+	pw_properties_free(d->module_props);
+
 	return 0;
 }
 
diff --git a/src/modules/module-protocol-pulse/modules/module-tunnel-sink.c b/src/modules/module-protocol-pulse/modules/module-tunnel-sink.c
index b49fb008a..688251440 100644
--- a/src/modules/module-protocol-pulse/modules/module-tunnel-sink.c
+++ b/src/modules/module-protocol-pulse/modules/module-tunnel-sink.c
@@ -109,6 +109,9 @@ static int module_tunnel_sink_unload(struct client *client, struct module *modul
 		pw_impl_module_destroy(d->mod);
 		d->mod = NULL;
 	}
+
+	pw_properties_free(d->stream_props);
+
 	return 0;
 }
 
diff --git a/src/modules/module-protocol-pulse/modules/module-tunnel-source.c b/src/modules/module-protocol-pulse/modules/module-tunnel-source.c
index 49c55fcbb..3cf1cc4bd 100644
--- a/src/modules/module-protocol-pulse/modules/module-tunnel-source.c
+++ b/src/modules/module-protocol-pulse/modules/module-tunnel-source.c
@@ -109,6 +109,9 @@ static int module_tunnel_source_unload(struct client *client, struct module *mod
 		pw_impl_module_destroy(d->mod);
 		d->mod = NULL;
 	}
+
+	pw_properties_free(d->stream_props);
+
 	return 0;
 }