diff --git a/src/menu.c b/src/menu.c
index e0a32a66..e5809bd7 100644
--- a/src/menu.c
+++ b/src/menu.c
@@ -2094,6 +2094,9 @@ static void menuTitleDoubleClick(WCoreWindow * sender, void *data, XEvent * even
 	WMenu *menu = data;
 	int lower;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) sender;
+
 	if (event->xbutton.state & MOD_MASK) {
 		if (menu->flags.lowered) {
 			lower = 0;
@@ -2114,6 +2117,9 @@ static void menuTitleMouseDown(WCoreWindow * sender, void *data, XEvent * event)
 	int i, lower;
 	Bool started;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) sender;
+
 	/* can't touch the menu copy */
 	if (menu->flags.brother)
 		return;
@@ -2221,6 +2227,10 @@ static void menuCloseClick(WCoreWindow * sender, void *data, XEvent * event)
 	WMenu *parent = menu->parent;
 	int i;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) sender;
+	(void) event;
+
 	if (parent) {
 		for (i = 0; i < parent->cascade_no; i++) {
 			/* find the entry that points to the copy */
diff --git a/src/window.c b/src/window.c
index 3146bb5b..d590fab1 100644
--- a/src/window.c
+++ b/src/window.c
@@ -2669,6 +2669,9 @@ static void resizebarMouseDown(WCoreWindow *sender, void *data, XEvent *event)
 {
 	WWindow *wwin = data;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) sender;
+
 #ifndef NUMLOCK_HACK
 	if ((event->xbutton.state & ValidModMask)
 	    != (event->xbutton.state & ~LockMask)) {
@@ -2711,6 +2714,9 @@ static void titlebarDblClick(WCoreWindow *sender, void *data, XEvent *event)
 {
 	WWindow *wwin = data;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) sender;
+
 	event->xbutton.state &= w_global.shortcut.modifiers_mask;
 
 	if (event->xbutton.button == Button1) {
@@ -2826,6 +2832,9 @@ static void titlebarMouseDown(WCoreWindow *sender, void *data, XEvent *event)
 {
 	WWindow *wwin = (WWindow *) data;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) sender;
+
 #ifndef NUMLOCK_HACK
 	if ((event->xbutton.state & ValidModMask) != (event->xbutton.state & ~LockMask))
 		wwarning(_("The NumLock, ScrollLock or similar key seems to be turned on. "
@@ -2889,6 +2898,9 @@ static void windowCloseClick(WCoreWindow *sender, void *data, XEvent *event)
 {
 	WWindow *wwin = data;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) sender;
+
 	event->xbutton.state &= w_global.shortcut.modifiers_mask;
 
 	CloseWindowMenu(wwin->screen_ptr);
@@ -2912,6 +2924,9 @@ static void windowCloseDblClick(WCoreWindow *sender, void *data, XEvent *event)
 {
 	WWindow *wwin = data;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) sender;
+
 	CloseWindowMenu(wwin->screen_ptr);
 
 	if (event->xbutton.button < Button1 || event->xbutton.button > Button3)
@@ -2933,6 +2948,9 @@ static void windowLanguageClick(WCoreWindow *sender, void *data, XEvent *event)
 	WScreen *scr = fwin->screen_ptr;
 	int tl;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) sender;
+
 	if (event->xbutton.button != Button1 && event->xbutton.button != Button3)
 		return;
 	tl = wwin->frame->languagemode;
@@ -2952,6 +2970,9 @@ static void windowIconifyClick(WCoreWindow *sender, void *data, XEvent *event)
 {
 	WWindow *wwin = data;
 
+	/* Parameter not used, but tell the compiler that it is ok */
+	(void) sender;
+
 	event->xbutton.state &= w_global.shortcut.modifiers_mask;
 
 	CloseWindowMenu(wwin->screen_ptr);