diff --git a/Makefile.pl b/Makefile.pl
index 359b41e..9e69afe 100755
--- a/Makefile.pl
+++ b/Makefile.pl
@@ -169,13 +169,18 @@ print(OUT
       . " \$(LIBS)\n");
 
 foreach my $l (@library_targets) {
+    my $warn = "-Wall -Wextra -Wno-sign-compare";
     my $s = $l;
     my $o = $object_suffix;
     $o =~ s/\./\\\./g;
     $s =~ s/$o$/.c/;
 
+    if($l =~ /^external\//){
+	    $warn = "";
+    }
+
     print(OUT "${l}: ${s}\n");
-    print(OUT "	\$(CC) \$(CFLAGS\) \$\(INCDIR) -c -o ${l} ${s}\n");
+    print(OUT "	\$(CC) $warn \$(CFLAGS\) \$\(INCDIR) -c -o ${l} ${s}\n");
 }
 print(OUT "\n");
 print(OUT "\n");
diff --git a/src/backend/x11.c b/src/backend/x11.c
index cf85656..e6ca620 100644
--- a/src/backend/x11.c
+++ b/src/backend/x11.c
@@ -210,7 +210,8 @@ MwLL MwLLCreate(MwLL parent, int x, int y, int width, int height) {
 	XSelectInput(r->display, r->window, mask);
 
 	if(x != MwDEFAULT || y != MwDEFAULT) {
-		MwLLGetXYWH(r, &px, &py, &width, &height);
+		unsigned int dummy;
+		MwLLGetXYWH(r, &px, &py, &dummy, &dummy);
 
 		if(x == MwDEFAULT) x = px;
 		if(y == MwDEFAULT) y = py;
@@ -292,8 +293,7 @@ void MwLLColorUpdate(MwLL handle, MwLLColor c, int r, int g, int b) {
 	c->blue	 = b;
 }
 void MwLLGetXYWH(MwLL handle, int* x, int* y, unsigned int* w, unsigned int* h) {
-	Window	     root, parent;
-	Window	     child;
+	Window	     root;
 	unsigned int border, depth;
 
 	XGetGeometry(handle->display, handle->window, &root, x, y, w, h, &border, &depth);