diff --git a/xml/relaxng/src/org/intellij/html/RelaxedHtmlFromRngElementDescriptor.java b/xml/relaxng/src/org/intellij/html/RelaxedHtmlFromRngElementDescriptor.java
index 08ada22129d9..e21db4785f8c 100644
--- a/xml/relaxng/src/org/intellij/html/RelaxedHtmlFromRngElementDescriptor.java
+++ b/xml/relaxng/src/org/intellij/html/RelaxedHtmlFromRngElementDescriptor.java
@@ -94,7 +94,9 @@ public class RelaxedHtmlFromRngElementDescriptor implements XmlElementDescriptor
 
   @Override
   public XmlAttributeDescriptor getAttributeDescriptor(String attributeName, final XmlTag context) {
-    final XmlAttributeDescriptor descriptor = myDelegate.getAttributeDescriptor(attributeName.toLowerCase(), context);
+    XmlAttributeDescriptor descriptor = myDelegate.getAttributeDescriptor(attributeName.toLowerCase(), context);
+    // some elements in HTML5 schema (e.g. SVG) are case sensitive
+    descriptor = descriptor == null ? myDelegate.getAttributeDescriptor(attributeName, context) : descriptor;
     if (descriptor != null) return descriptor;
 
     return RelaxedHtmlFromSchemaElementDescriptor.getAttributeDescriptorFromFacelets(attributeName, context);
diff --git a/xml/relaxng/src/resources/html5-schema/html5-svg-mathml.rnc b/xml/relaxng/src/resources/html5-schema/html5-svg-mathml.rnc
index fe154b8f57bf..095868dee70a 100644
--- a/xml/relaxng/src/resources/html5-schema/html5-svg-mathml.rnc
+++ b/xml/relaxng/src/resources/html5-schema/html5-svg-mathml.rnc
@@ -1,7 +1,7 @@
 namespace svg = "http://www.w3.org/2000/svg"
 namespace math = "http://www.w3.org/1998/Math/MathML"
 
-include "svg11/svg11-tiny-inc.rnc"
+include "svg11/svg11-inc.rnc"
 include "mml3/mathml3-inc.rnc"
 
 common.elem.phrasing |= svg
diff --git a/xml/relaxng/src/resources/html5-schema/xhtml5-svg-mathml.rnc b/xml/relaxng/src/resources/html5-schema/xhtml5-svg-mathml.rnc
index 74f188644741..98d6fbd597e4 100644
--- a/xml/relaxng/src/resources/html5-schema/xhtml5-svg-mathml.rnc
+++ b/xml/relaxng/src/resources/html5-schema/xhtml5-svg-mathml.rnc
@@ -2,7 +2,7 @@ namespace svg = "http://www.w3.org/2000/svg"
 namespace math = "http://www.w3.org/1998/Math/MathML"
 namespace rdf = "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
 
-include "svg11/svg11-tiny-inc.rnc"
+include "svg11/svg11-inc.rnc"
 include "inkscape/inkscape.rnc"
 include "mml3/mathml3-inc.rnc"
 include "rdf/rdf.rnc"
diff --git a/xml/relaxng/src/resources/patches/0007_html5_svg_tiny.patch b/xml/relaxng/src/resources/patches/0007_html5_svg_tiny.patch
deleted file mode 100644
index 6a3cc10cc8e2..000000000000
--- a/xml/relaxng/src/resources/patches/0007_html5_svg_tiny.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- /Users/denofevil/Code/sandbox/checker/validator/schema/html5-svg-mathml.rnc	2014-01-24 12:18:54.000000000 +0400
-+++ html5-svg-mathml.rnc	2014-01-25 15:32:10.000000000 +0400
-@@ -1,7 +1,7 @@
- namespace svg = "http://www.w3.org/2000/svg"
- namespace math = "http://www.w3.org/1998/Math/MathML"
- 
--include "svg11/svg11-inc.rnc"
-+include "svg11/svg11-tiny-inc.rnc"
- include "mml3/mathml3-inc.rnc"
- 
- common.elem.phrasing |= svg
diff --git a/xml/relaxng/src/resources/patches/0008_xhtml5_svg_tiny.patch b/xml/relaxng/src/resources/patches/0008_xhtml5_svg_tiny.patch
deleted file mode 100644
index 773c8969c177..000000000000
--- a/xml/relaxng/src/resources/patches/0008_xhtml5_svg_tiny.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- /Users/denofevil/Code/sandbox/checker/validator/schema/xhtml5-svg-mathml.rnc	2014-01-24 12:18:54.000000000 +0400
-+++ xhtml5-svg-mathml.rnc	2014-01-25 15:50:41.000000000 +0400
-@@ -2,7 +2,7 @@
- namespace math = "http://www.w3.org/1998/Math/MathML"
- namespace rdf = "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
- 
--include "svg11/svg11-inc.rnc"
-+include "svg11/svg11-tiny-inc.rnc"
- include "inkscape/inkscape.rnc"
- include "mml3/mathml3-inc.rnc"
- include "rdf/rdf.rnc"