diff --git a/js/impress.js b/js/impress.js
index 44679c4..dce97a2 100644
--- a/js/impress.js
+++ b/js/impress.js
@@ -1204,7 +1204,8 @@
 
             // Get id from url # by removing `#` or `#/` from the beginning,
             // so both "fallback" `#slide-id` and "enhanced" `#/slide-id` will work
-            return byId( window.location.hash.replace( /^#\/?/, "" ) );
+            var encoded = window.location.hash.replace( /^#\/?/, "" );
+            return byId( decodeURIComponent( encoded ) );
         };
 
         // `getUrlParamValue` return a given URL parameter value if it exists
diff --git a/src/lib/util.js b/src/lib/util.js
index b0d3a93..d9aa38e 100644
--- a/src/lib/util.js
+++ b/src/lib/util.js
@@ -46,7 +46,8 @@
 
             // Get id from url # by removing `#` or `#/` from the beginning,
             // so both "fallback" `#slide-id` and "enhanced" `#/slide-id` will work
-            return byId( window.location.hash.replace( /^#\/?/, "" ) );
+            var encoded = window.location.hash.replace( /^#\/?/, "" );
+            return byId( decodeURIComponent( encoded ) );
         };
 
         // `getUrlParamValue` return a given URL parameter value if it exists