diff --git a/src/elogd.c b/src/elogd.c
index efe0186a..f938f3d6 100755
--- a/src/elogd.c
+++ b/src/elogd.c
@@ -1220,8 +1220,7 @@ void stou(char *str)
    int i;
 
    for (i = 0; i < (int) strlen(str); i++)
-      if (str[i] == ' ' || str[i] == '.' || str[i] == '/' ||
-          str[i] == '\\' || str[i] == '-' || str[i] == '(' || str[i] == ')')
+      if (!isalnum(str[i]))
          str[i] = '_';
 }