diff --git a/README.md b/README.md
index 99aa940..97e1964 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ Did you know about the available IMDb.com API? The price to use it is around $15
 
 ---
 
-**If you want to thank me for my work and the support, feel free to do this through PayPal (use mail@fabian-beiner.de as payment destination) or just buy me a book at [Amazon](http://www.amazon.de/registry/wishlist/8840JITISN9L) – thank you! :-)**
+**If you want to thank me for my work and the support, feel free to buy me a book or something at [Amazon](http://www.amazon.de/registry/wishlist/8840JITISN9L) – thank you! :-)**
 
 ## License
 
@@ -20,6 +20,11 @@ Since version 5.5.0 the script is licensed under [CC BY-NC-SA 3.0](http://creati
 
 ## Changes
 
+5.5.20
+- Updated lots of the IMDB_* constants. *(Thanks to bla0r)*
+- Fixed Runtime (issue #46).
+- Improved the regular expressions.
+
 5.5.19
 - Fixed IMDB_FULL_CAST and IMDB_YEAR.
 - getSitesAsUrl() only returns a link, if the url starts with "http".
diff --git a/imdb.class.php b/imdb.class.php
index 781b0f6..b44294e 100644
--- a/imdb.class.php
+++ b/imdb.class.php
@@ -48,9 +48,9 @@ class IMDB {
     const IMDB_AKA          = '~Also Known As:</h4>(.*)<span~Ui';
     const IMDB_ASPECT_RATIO = '~Aspect Ratio:</h4>(.*)</div>~Ui';
     const IMDB_BUDGET       = '~Budget:</h4>(.*)<span~Ui';
-    const IMDB_CAST         = '~itemprop="actor"(?:.*)><a href="/name/nm(\d+)/(?:.*)"(?:\s*)itemprop=\'url\'> <span class="itemprop" itemprop="name">(.*)</span>~Ui';
+    const IMDB_CAST         = '~itemprop="actor"(?:.*)><a href="/name/nm(\d+)/(?:.*)"(?:\s*)itemprop=\'url\'>(?:\s*)<span class="itemprop" itemprop="name">(.*)</span>~Ui';
     const IMDB_FULL_CAST    = '~<span class="itemprop" itemprop="name">(.*?)</span>~Ui';
-    const IMDB_CHAR         = '~<td class="character">\s+<div>(.*)</div>\s+</td~Ui';
+    const IMDB_CHAR         = '~<td class="character">(?:\s*)<div>(.*)</div>(?:\s*)</td~Ui';
     const IMDB_COLOR        = '~href="/search/title\?colors=(?:.*)"(?:\s*)itemprop=\'url\'>(.*)</a>~Ui';
     const IMDB_COMPANY      = '~Production Co:</h4>(.*)</div>~Ui';
     const IMDB_COMPANY_NAME = '~href="/company/co(\d+)(?:\?.*)"(?:\s*)itemprop=\'url\'>(.*)</a>~Ui';
@@ -58,32 +58,32 @@ class IMDB {
     const IMDB_CREATOR      = '~(?:Creator|Creators):</h4>(.*)</div>~Ui';
     const IMDB_DESCRIPTION  = '~<p itemprop="description">(.*)(?:<a|<\/p>)~Ui';
     const IMDB_DIRECTOR     = '~(?:Director|Directors):</h4>(.*)</div>~Ui';
-    const IMDB_GENRE        = '~href="/genre/(.*)(?:\?.*)"(?:\s+|)>(.*)</a>~Ui';
+    const IMDB_GENRE        = '~href="/genre/(.*)(?:\?.*)"(?:\s*)>(.*)</a>~Ui';
     const IMDB_ID           = '~(tt\d{6,})~';
     const IMDB_LANGUAGES    = '~href="/language/(.*)(?:\?.*)"(?:\s*)itemprop=\'url\'>(.*)</a>~Ui';
     const IMDB_LOCATION     = '~href="/search/title\?locations=(.*)(?:&.*)"itemprop=\'url\'>(.*)</a>~Ui';
     const IMDB_MPAA         = '~span itemprop="contentRating"(?:.*)>(.*)</span~Ui';
     const IMDB_NAME         = '~href="/name/nm(\d+)/(?:.*)"(?:\s*)itemprop=\'(?:\w+)\'><span class="itemprop" itemprop="name">(.*)</span>~Ui';
     const IMDB_OPENING      = '~Opening Weekend:</h4>(.*)\(~Ui';
-    const IMDB_PLOT         = '~Storyline</h2>\s+<div class="inline canwrap" itemprop="description">\s+<p>(.*)(?:<em|<\/p>|<\/div>)~Ui';
+    const IMDB_PLOT         = '~Storyline</h2>(?:\s*)<div class="inline canwrap" itemprop="description">(?:\s*)<p>(.*)(?:<em|<\/p>|<\/div>)~Ui';
     const IMDB_POSTER       = '~"src="(.*)"itemprop="image" \/>~Ui';
     const IMDB_RATING       = '~<span itemprop="ratingValue">(.*)</span>~Ui';
-    const IMDB_REDIRECT     = '~Location:\s(.*)~';
+    const IMDB_REDIRECT     = '~Location:(?:\s*)(.*)~';
     const IMDB_RELEASE_DATE = '~Release Date:</h4>(.*)(?:<span|<\/div>)~Ui';
-    const IMDB_RUNTIME      = '~Runtime:</h4>\s+<time itemprop="duration" datetime="(?:.*)">(.*)</time>~Uis';
-    const IMDB_SEARCH       = '~<td class="result_text"> <a href="\/title\/tt(\d+)\/(?:.*)"(?:\s+|)>(.*)<\/a>~Uis';
-    const IMDB_SEASONS      = '~Season:</h4>\s+<span class="see-more inline">(.*)</span>\s+</div>~Ui';
+    const IMDB_RUNTIME      = '~<time itemprop="duration" datetime="(?:.*)"(?:\s*)>(?:\s*)(.*)</time>~Uis';
+    const IMDB_SEARCH       = '~<td class="result_text"> <a href="\/title\/tt(\d+)\/(?:.*)"(?:\s*)>(.*)<\/a>~Uis';
+    const IMDB_SEASONS      = '~Season:</h4>(?:\s*)<span class="see-more inline">(.*)</span>(?:\s*)</div>~Ui';
     const IMDB_SITES        = '~Official Sites:</h4>(.*)(?:<a href="officialsites|</div>)~Ui';
     const IMDB_SITES_A      = '~href="(.*)" itemprop=\'url\'>(.*)</a>~Ui';
     const IMDB_SOUND_MIX    = '~Sound Mix:</h4>(.*)</div>~Ui';
     const IMDB_SOUND_MIX_A  = '~href="/search/title\?sound_mixes=(?:.*)"(?:\s*)itemprop=\'url\'>(.*)</a>~Ui';
     const IMDB_TAGLINE      = '~Taglines:</h4>(.*)(?:<span|<\/span>|</div>)~Ui';
     const IMDB_TITLE        = '~property=\'og:title\' content="(.*) \((?:.*)\)"~Ui';
-    const IMDB_TITLE_ORIG   = '~<span class="title-extra" itemprop="name">(.*)<i>\(original title\)<\/i>\s+</span>~Ui';
+    const IMDB_TITLE_ORIG   = '~<span class="title-extra" itemprop="name">(.*)<i>\(original title\)<\/i>(?:\s*)</span>~Ui';
     const IMDB_TRAILER      = '~href="/video/(.*)/(?:\?.*)"(?:.*)itemprop="trailer">~Ui';
     const IMDB_URL          = '~http://(?:.*\.|.*)imdb.com/(?:t|T)itle(?:\?|/)(..\d+)~i';
     const IMDB_VOTES        = '~<span itemprop="ratingCount">(.*)</span>~Ui';
-    const IMDB_YEAR         = '~<h1 class="header">(?:\s+)<span class="itemprop" itemprop="name">(?:.*)</span>(?:\s+)<span class="nobr">\((.*)\)</span>~Ui';
+    const IMDB_YEAR         = '~<h1 class="header">(?:\s*)<span class="itemprop" itemprop="name">(?:.*)</span>(?:\s*)<span class="nobr">\((.*)\)</span>~Ui';
     const IMDB_WRITER       = '~(?:Writer|Writers):</h4>(.*)</div>~Ui';
 
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