diff --git a/s/convert.sh b/s/convert.sh
new file mode 100644
index 000000000..6a18ad8a0
--- /dev/null
+++ b/s/convert.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+while [ ! -z $1 ] ; do
+        tmpfile=$(mktemp eressea.XXX)
+        iconv -f latin1 -t utf-8 < $1 | \
+                perl -pe 's/ß/ss/; s/ä/ae/; s/ü/ue/; s/ö/oe/;' \
+                > $tmpfile && \mv $tmpfile $1
+    file $1
+        shift 1
+done
diff --git a/src/util/unicode.c b/src/util/unicode.c
index cbc2db7cc..3d11ed230 100644
--- a/src/util/unicode.c
+++ b/src/util/unicode.c
@@ -56,7 +56,7 @@ size_t unicode_utf8_trim(char *buf)
                 ++result;
             }
         }
-        if (op == buf && (iswcntrl(wc) || iswspace(wc))) {
+        if (op == buf && (iswspace(wc) || !iswprint(wc))) {
             result += size;
         }
         else if (wc>255 || !iscntrl(wc)) {
@@ -64,7 +64,7 @@ size_t unicode_utf8_trim(char *buf)
                 memmove(op, ip, size);
             }
             op += size;
-            if (iswcntrl(wc) || iswspace(wc)) {
+            if (iswspace(wc) || !iswprint(wc)) {
                 ts += size;
             }
             else {
diff --git a/src/util/unicode.h b/src/util/unicode.h
index 6ebcc4794..c03e83686 100644
--- a/src/util/unicode.h
+++ b/src/util/unicode.h
@@ -19,8 +19,8 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #ifndef _UNICODE_H
 #define _UNICODE_H
 
-#include <stdint.h>
 #include <stddef.h>
+#include <wchar.h>
 
 #ifdef __cplusplus
 extern "C" {