diff --git a/Makefile b/Makefile
index 59e8ac5..71e20bd 100644
--- a/Makefile
+++ b/Makefile
@@ -18,9 +18,9 @@ xwin.o: xwin.c
 
 xdu.o: xdu.c
 
+.PHONY: clean, nice
 clean:
 	rm -f xdu xdu.o xwin.o
 
-.PHONY: nice
 nice:
-	indent -kr -l0 --no-tabs $(SRCS)
+	clang-format -i -style=webkit $(SRCS)
diff --git a/README.md b/README.md
index eb57e8e..4b09ff4 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,10 @@ This release was tested against MarIuX.
 
 ## Revision History
 
+### Version 3.0p9 - Sep 13 2018
+- fix segmentation fault
+- Niclas Hofmann, `niclas@molgen.mpg.de`
+
 ### Version 3.0p8 - Sep 3 2018
 - change and add mouse control
 - Niclas Hofmann, `niclas@molgen.mpg.de`
diff --git a/xdu.c b/xdu.c
index 1e1013f..37b0a02 100644
--- a/xdu.c
+++ b/xdu.c
@@ -970,7 +970,7 @@ void fprintpsbox(FILE* fp, int x1, int y1, int x2, int y2)
         "  10 setmiterlimit\n"
         "  gsave\n"
         "    newpath\n"
-        "      %i %i moveto %i %i lineto %i %i lineto %i %i lineto\n"
+        "      %d %d moveto %d %d lineto %d %d lineto %d %d lineto\n"
         "    closepath\n"
         "    stroke\n"
         "  grestore\n"
@@ -994,11 +994,10 @@ void fprintpstext(FILE* fp, int x, int y, char* s)
 
 void savepschildren(FILE* fp, struct node* nodep, struct rect rect, int showsize)
 {
-    long long totalsize;
+    long long size, totalsize;
     int totalheight,
         height,
-        top,
-        size;
+        top;
     struct node* np;
     char *name,
         label[1024];
@@ -1060,7 +1059,7 @@ void savepschildren(FILE* fp, struct node* nodep, struct rect rect, int showsize
         savepschildren(fp, np, subrect, showsize);
 
         size += np->size;
-        top = rect.top + (totalsize ? (double)size / (double)totalsize * rect.height + 0.5 : 0);
+        top = rect.top + (int)(totalsize ? (double)size / (double)totalsize * rect.height + 0.5 : 0);
     }
 }
 
@@ -1129,9 +1128,9 @@ void savetops(char* fname, int showsize)
     }
 }
 
-void fprintsvgstart(FILE* fp)
+void fprintsvgstart(FILE* fp, int width, int height)
 {
-    fprintf(fp, "<svg xmlns=\"http://www.w3.org/2000/svg\">\n");
+    fprintf(fp, "<?xml version=\"1.0\"?>\n<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"%d\" height=\"%d\">\n", width, height);
 }
 
 void fprintsvgend(FILE* fp)
@@ -1202,12 +1201,12 @@ void savesvgnode(FILE* fp, struct node* nodep, int showsize, int depth)
     }
 }
 
-void savetosvg(char* fname, int showsize)
+void savetosvg(char* fname, int showsize, int width, int height)
 {
     FILE* fp;
 
     if ((fp = fopen(fname, "w")) != NULL) {
-        fprintsvgstart(fp);
+        fprintsvgstart(fp, width, height);
         savesvgnode(fp, topp, showsize, 0);
         fprintsvgend(fp);
         fclose(fp);
diff --git a/xwin.c b/xwin.c
index 48d1553..0e87038 100644
--- a/xwin.c
+++ b/xwin.c
@@ -50,7 +50,7 @@ extern int nodeinfo();
 extern int helpinfo();
 extern int ncols;
 extern void savetops(char*, int);
-extern void savetosvg(char*, int);
+extern void savetosvg(char*, int, int, int);
 
 /*
  * EXPORTS: routines that this module exports outside 
@@ -206,8 +206,9 @@ static char defaultTranslations[] = "\
 
 #define ALL_UNUSED_IMPL_(nargs) UNUSED##nargs
 #define ALL_UNUSED_IMPL(nargs) ALL_UNUSED_IMPL_(nargs)
-#define UNUSED(...) ALL_UNUSED_IMPL(VA_NUM_ARGS(__VA_ARGS__)) \
-(__VA_ARGS__)
+#define UNUSED(...)                           \
+    ALL_UNUSED_IMPL(VA_NUM_ARGS(__VA_ARGS__)) \
+    (__VA_ARGS__)
 
 /*
  * action routines 
@@ -272,36 +273,6 @@ a_saveps(Widget w, XEvent* e, String* params, Cardinal* num_params)
     fprintf(stderr, "saved !\n");
 }
 
-static void
-a_savesvg(Widget w, XEvent* e, String* params, Cardinal* num_params)
-{
-    char* extension = ".svg";
-    int len = strlen(res.svgfilename) + 3 + strlen(extension) + 1;
-    char tmp[len];
-    char* fname;
-    int i;
-
-    UNUSED(w, e, params, num_params);
-
-    for (i = 0; i > -1; ++i) {
-        snprintf(tmp, len, "%s-%02d%s", res.svgfilename, i, extension);
-        if (access(tmp, F_OK) == -1) {
-            fname = tmp;
-            break;
-        }
-    }
-
-    if (i < 0) {
-        fprintf(stderr, "ERROR: there are too many xdu_output files!!!\n");
-        exit(1);
-    }
-
-    fprintf(stderr, "saving as scalable vector graphic to file: %s ..",
-        fname);
-    savetosvg(fname, res.showsize);
-    fprintf(stderr, "saved !\n");
-}
-
 static void
 a_up(Widget w, XEvent* e, String* params, Cardinal* num_params)
 {
@@ -393,6 +364,39 @@ static Window win;
 static GC gc;
 static XtAppContext app_con;
 
+static void
+a_savesvg(Widget w, XEvent* e, String* params, Cardinal* num_params)
+{
+    char* extension = ".svg";
+    int len = strlen(res.svgfilename) + 3 + strlen(extension) + 1;
+    char tmp[len];
+    char* fname;
+    int i;
+    XWindowAttributes xwa;
+
+    XGetWindowAttributes(dpy, win, &xwa);
+
+    UNUSED(w, e, params, num_params);
+
+    for (i = 0; i > -1; ++i) {
+        snprintf(tmp, len, "%s-%02d%s", res.svgfilename, i, extension);
+        if (access(tmp, F_OK) == -1) {
+            fname = tmp;
+            break;
+        }
+    }
+
+    if (i < 0) {
+        fprintf(stderr, "ERROR: there are too many xdu_output files!!!\n");
+        exit(1);
+    }
+
+    fprintf(stderr, "saving as scalable vector graphic to file: %s ..",
+        fname);
+    savetosvg(fname, res.showsize, xwa.width, xwa.height);
+    fprintf(stderr, "saved !\n");
+}
+
 Widget toplevel;
 
 /*