diff --git a/src/compton.h b/src/compton.h
index fea61fe..121a2f2 100644
--- a/src/compton.h
+++ b/src/compton.h
@@ -25,9 +25,7 @@
 #include "win.h"
 #include "x.h"
 
-enum root_flags {
-	ROOT_FLAGS_SCREEN_CHANGE = 1
-};
+enum root_flags { ROOT_FLAGS_SCREEN_CHANGE = 1 };
 
 // == Functions ==
 // TODO move static inline functions that are only used in compton.c, into
@@ -100,9 +98,10 @@ static inline void free_wincondlst(c2_lptr_t **pcondlst) {
 }
 
 #ifndef CONFIG_OPENGL
-static inline void free_paint_glx(session_t *ps, paint_t *p) {
+static inline void free_paint_glx(session_t *ps attr_unused, paint_t *p attr_unused) {
 }
-static inline void free_win_res_glx(session_t *ps, struct managed_win *w) {
+static inline void
+free_win_res_glx(session_t *ps attr_unused, struct managed_win *w attr_unused) {
 }
 #endif
 
diff --git a/src/render.c b/src/render.c
index 5e15914..c2f9262 100644
--- a/src/render.c
+++ b/src/render.c
@@ -92,6 +92,15 @@ static inline bool paint_bind_tex(session_t *ps, paint_t *ppaint, int wid, int h
 	if (force || !glx_tex_binded(ppaint->ptex, ppaint->pixmap))
 		return glx_bind_pixmap(ps, &ppaint->ptex, ppaint->pixmap, wid, hei,
 		                       repeat, fbcfg);
+#else
+	(void)ps;
+	(void)ppaint;
+	(void)wid;
+	(void)hei;
+	(void)repeat;
+	(void)depth;
+	(void)visual;
+	(void)force;
 #endif
 	return true;
 }
@@ -203,6 +212,12 @@ void render(session_t *ps, int x, int y, int dx, int dy, int wid, int hei, doubl
 #endif
 	default: assert(0);
 	}
+#ifndef CONFIG_OPENGL
+	(void)neg;
+	(void)ptex;
+	(void)reg_paint;
+	(void)pprogram;
+#endif
 }
 
 static inline void
@@ -738,6 +753,9 @@ win_blur_background(session_t *ps, struct managed_win *w, xcb_render_picture_t t
 #endif
 	default: assert(0);
 	}
+#ifndef CONFIG_OPENGL
+	(void)reg_paint;
+#endif
 }
 
 /// paint all windows