diff -Naur a/src/actions/gsm_gksu.cpp b/src/actions/gsm_gksu.cpp
--- a/src/actions/gsm_gksu.cpp	2026-09-15 20:23:40.812359892 +0200
+++ b/src/actions/gsm_gksu.cpp	2026-09-15 20:24:31.310407865 +0200
@@ -16,20 +16,23 @@
 static void
 load_gksu (void)
 {
-  static GModule *module = NULL;
+  static gsize initialized = 0;
 
-  if (g_once_init_enter_pointer (&module)) {
+  if (g_once_init_enter (&initialized)) {
     GModule *gksu = g_module_open ("libgksu2.so",
                                    static_cast<GModuleFlags>(G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL));
 
-    if (!g_module_symbol (gksu, "gksu_run", (gpointer *) &gksu_run)) {
+    if (gksu == NULL) {
+      g_debug ("Could not load libgksu2.so");
+    } else if (!g_module_symbol (gksu, "gksu_run", (gpointer *) &gksu_run)) {
       g_debug ("Could not load gksu_run from libgksu2.so");
-      return;
+      g_module_close (gksu);
     } else {
       g_debug ("Loaded gksu_run from libgksu2.so");
+      g_module_make_resident (gksu);
     }
 
-    g_once_init_leave_pointer (&module, g_steal_pointer (&gksu));
+    g_once_init_leave (&initialized, 1);
   }
 }
 
diff -Naur a/src/actions/gsm_gnomesu.cpp b/src/actions/gsm_gnomesu.cpp
--- a/src/actions/gsm_gnomesu.cpp	2026-09-15 20:23:41.323582745 +0200
+++ b/src/actions/gsm_gnomesu.cpp	2026-09-15 20:24:31.310426801 +0200
@@ -16,20 +16,23 @@
 static void
 load_gnomesu (void)
 {
-  static GModule *module = NULL;
+  static gsize initialized = 0;
 
-  if (g_once_init_enter_pointer (&module)) {
+  if (g_once_init_enter (&initialized)) {
     GModule *gnomesu = g_module_open ("libgnomesu.so.0",
                                       static_cast<GModuleFlags>(G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL));
 
-    if (!g_module_symbol (gnomesu, "gnomesu_exec", (gpointer *) &gnomesu_exec)) {
+    if (gnomesu == NULL) {
+      g_debug ("Could not load libgnomesu.so.0");
+    } else if (!g_module_symbol (gnomesu, "gnomesu_exec", (gpointer *) &gnomesu_exec)) {
       g_debug ("Could not load gnomesu_exec from libgnomesu.so.0");
-      return;
+      g_module_close (gnomesu);
     } else {
       g_debug ("Loaded gnomesu_exec from libgnomesu.so.0");
+      g_module_make_resident (gnomesu);
     }
 
-    g_once_init_leave_pointer (&module, g_steal_pointer (&gnomesu));
+    g_once_init_leave (&initialized, 1);
   }
 }
 
diff -Naur a/src/selinux/gsm-selinux.c b/src/selinux/gsm-selinux.c
--- a/src/selinux/gsm-selinux.c	2026-09-15 20:23:09.272207467 +0200
+++ b/src/selinux/gsm-selinux.c	2026-09-15 20:24:31.310382828 +0200
@@ -17,38 +17,32 @@
 static gboolean
 load_selinux (void)
 {
+  static gsize initialized = 0;
   static GModule *module = NULL;
 
-  if (g_once_init_enter_pointer (&module)) {
+  if (g_once_init_enter (&initialized)) {
     GModule *selinux = g_module_open ("libselinux.so.1",
                                       G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
 
-    if (!g_module_symbol (selinux, "getpidcon", (gpointer *) &getpidcon)) {
-      g_debug ("Could not load getpidcon from libselinux.so.0");
-      return FALSE;
+    if (selinux == NULL) {
+      g_debug ("Could not load libselinux.so.1");
+    } else if (!g_module_symbol (selinux, "getpidcon", (gpointer *) &getpidcon)) {
+      g_debug ("Could not load getpidcon from libselinux.so.1");
+    } else if (!g_module_symbol (selinux, "freecon", (gpointer *) &freecon)) {
+      g_debug ("Could not load freecon from libselinux.so.1");
+    } else if (!g_module_symbol (selinux,
+                                 "is_selinux_enabled",
+                                 (gpointer *) &is_selinux_enabled)) {
+      g_debug ("Could not load is_selinux_enabled from libselinux.so.1");
     } else {
-      g_debug ("Loaded getpidcon from libselinux.so.0");
+      g_debug ("Loaded libselinux.so.1");
+      g_module_make_resident (selinux);
+      module = g_steal_pointer (&selinux);
     }
 
-    if (!g_module_symbol (selinux, "freecon", (gpointer *) &freecon)) {
-      g_debug ("Could not load freecon from libselinux.so.0");
-      return FALSE;
-    } else {
-      g_debug ("Loaded freecon from libselinux.so.0");
-    }
-
-    if (!g_module_symbol (selinux,
-                          "is_selinux_enabled",
-                          (gpointer *) &is_selinux_enabled)) {
-      g_debug ("Could not load is_selinux_enabled from libselinux.so.0");
-      return FALSE;
-    } else {
-      g_debug ("Loaded is_selinux_enabled from libselinux.so.0");
-    }
-
-    g_module_make_resident (selinux);
+    g_clear_pointer (&selinux, g_module_close);
 
-    g_once_init_leave_pointer (&module, g_steal_pointer (&selinux));
+    g_once_init_leave (&initialized, 1);
   }
 
   return module != NULL;