diff --git a/mustache.js b/mustache.js
index 8095193..16b7429 100644
--- a/mustache.js
+++ b/mustache.js
@@ -254,7 +254,8 @@ var Mustache;
         return self.render(template, context);
       };
 
-      return value.call(context.view, text, scopedRender) || "";
+      var result = value.call(context.view, text, scopedRender);
+      return result != null ? result : "";
     default:
       if (value) {
         return callback(this, context);
diff --git a/test/_files/check_falsy.js b/test/_files/check_falsy.js
new file mode 100644
index 0000000..5a599ca
--- /dev/null
+++ b/test/_files/check_falsy.js
@@ -0,0 +1,7 @@
+({
+  number: function(text, render) {
+    return function(text, render) {
+      return +render(text);
+    }
+  }
+})
diff --git a/test/_files/check_falsy.mustache b/test/_files/check_falsy.mustache
new file mode 100644
index 0000000..30e2547
--- /dev/null
+++ b/test/_files/check_falsy.mustache
@@ -0,0 +1 @@
+<p>{{#number}}0{{/number}}</p>
diff --git a/test/_files/check_falsy.txt b/test/_files/check_falsy.txt
new file mode 100644
index 0000000..3bb2f51
--- /dev/null
+++ b/test/_files/check_falsy.txt
@@ -0,0 +1 @@
+<p>0</p>