diff --git a/lib/nib/vendor.styl b/lib/nib/vendor.styl
index e6b5fef6..4afe5531 100644
--- a/lib/nib/vendor.styl
+++ b/lib/nib/vendor.styl
@@ -276,6 +276,16 @@ opacity(n, args...)
       -ms-filter: '"progid:DXImageTransform.Microsoft.Alpha(Opacity=%s)"' % val args
       filter: 'alpha(opacity=%s)' % val args
 
+/*
+ * Blur with conditional IE support.
+ */
+
+blur(radius)
+  vendor('filter', 'blur(%s)' % radius, only: webkit moz ms official)
+
+  if support-for-ie
+    filter '"progid:DXImageTransform.Microsoft.Blur(PixelRadius=%d)"' % radius
+
 /*
  * Vendor "text-size-adjust"
  */
diff --git a/test/cases/vendor.css b/test/cases/vendor.css
index 66a64784..3d1ee179 100644
--- a/test/cases/vendor.css
+++ b/test/cases/vendor.css
@@ -7,10 +7,21 @@ button {
   -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";
   filter: alpha(opacity=50);
 }
+button {
+  -webkit-filter: blur(5px);
+  -moz-filter: blur(5px);
+  filter: blur(5px);
+  filter: "progid:DXImageTransform.Microsoft.Blur(PixelRadius=5)";
+}
 button {
   opacity: 0.75;
   white-space: nowrap;
 }
+button {
+  -webkit-filter: blur(1px);
+  -moz-filter: blur(1px);
+  filter: blur(1px);
+}
 button {
   -webkit-animation-name: myAnimation;
   -moz-animation-name: myAnimation;
diff --git a/test/cases/vendor.styl b/test/cases/vendor.styl
index defe38bd..06bcbc8e 100644
--- a/test/cases/vendor.styl
+++ b/test/cases/vendor.styl
@@ -10,12 +10,18 @@ button
 button
   opacity: 0.5
 
+button
+  blur: 5px
+
 support-for-ie = false
 
 button
   opacity: 0.75
   whitespace: no-wrap
 
+button
+  blur: 1px
+
 button
   animation-name: myAnimation;
   animation-delay: 1s;