diff --git a/glava-obs/entry.c b/glava-obs/entry.c
index 8d8ab36..cdc9dd2 100644
--- a/glava-obs/entry.c
+++ b/glava-obs/entry.c
@@ -76,7 +76,7 @@ struct mod_state {
     gs_texture_t* gs_tex;
     unsigned int  old_tex;
     struct {
-        const char* opts;
+        char* opts;
         int w, h;
     } cfg;
 };
@@ -182,8 +182,12 @@ static void update(void* data, obs_data_t* settings) {
     s->cfg.w = (int) obs_data_get_int(settings, "width");
     s->cfg.h = (int) obs_data_get_int(settings, "height");
     const char* opts = obs_data_get_string(settings, "options");
-    bool opts_changed = s->cfg.opts == NULL || strcmp(opts, s->cfg.opts) != 0;
-    s->cfg.opts = opts;
+    printf("debug: input str '%s', set '%s'\n", opts, s->cfg.opts);
+    bool opts_changed = s->cfg.opts == NULL || strcmp(opts, s->cfg.opts);
+    if (s->cfg.opts != NULL) {
+        free(s->cfg.opts);
+    }
+    s->cfg.opts = strdup(opts);
 
     if (opts_changed) {
         blog(LOG_INFO, "Updating GLava state");
diff --git a/glava/glsl_ext.c b/glava/glsl_ext.c
index 1711bf6..2e0c7ce 100644
--- a/glava/glsl_ext.c
+++ b/glava/glsl_ext.c
@@ -212,6 +212,7 @@ static struct schar directive(struct glsl_ext* ext, char** args,
             ext_process(&next, target);
             inherit(ext, &next);
             munmap(map, st.st_size);
+            close(fd);
 
             ext->ss_lookup = next.ss_lookup;
             
diff --git a/glava/pulse_input.c b/glava/pulse_input.c
index 198e20d..c599454 100644
--- a/glava/pulse_input.c
+++ b/glava/pulse_input.c
@@ -89,10 +89,8 @@ static void init(struct audio_data* audio) {
 
         exit(EXIT_FAILURE);
     }
-
+    
 	pa_mainloop_run(m_pulseaudio_mainloop, &ret);
-	
-
 }
 
 /* Sample format for native 'float' type */
diff --git a/glava/render.c b/glava/render.c
index 6399241..8fff3f0 100644
--- a/glava/render.c
+++ b/glava/render.c
@@ -888,18 +888,26 @@ struct glava_renderer* rd_new(const char**    paths,        const char* entry,
     const char* backend = force_backend;
 
     /* Window creation backend interfaces */
+
+    if (wcbs_idx == 0) {
+        #ifdef GLAVA_GLFW
+        DECL_WCB(wcb_glfw);
+        #endif
+        #ifdef GLAVA_GLX
+        DECL_WCB(wcb_glx);
+        #endif
+    }
+    
     #ifdef GLAVA_GLFW
-    DECL_WCB(wcb_glfw);
     if (!forced) backend = "glfw";
     #endif
-
+    
     #ifdef GLAVA_GLX
-    DECL_WCB(wcb_glx);
     if (!forced && getenv("DISPLAY")) {
         backend = "glx";
     }
     #endif
-
+    
     if (!backend) {
         fprintf(stderr, "No backend available for the active windowing system\n");
         if (wcbs_idx == 0) {
@@ -1269,6 +1277,7 @@ struct glava_renderer* rd_new(const char**    paths,        const char* entry,
         ext_free(&ext);
         
         munmap((void*) map, st.st_size);
+        close(fd);
 
         if (auto_desktop) {
             if (env) {
@@ -1305,6 +1314,7 @@ struct glava_renderer* rd_new(const char**    paths,        const char* entry,
                 loading_presets = false;
 
                 munmap((void*) map, st.st_size);
+                close(fd);
             } else {
                 fprintf(stderr, "Failed to detect the desktop environment! "
                         "Is the window manager EWMH compliant?");