diff --git a/lib/mods_display/fields/imprint.rb b/lib/mods_display/fields/imprint.rb
index 1fb559b..0f08749 100644
--- a/lib/mods_display/fields/imprint.rb
+++ b/lib/mods_display/fields/imprint.rb
@@ -156,11 +156,15 @@ def date_is_w3cdtf?(date_field)
   end
   def process_w3cdtf_date(date_field)
     date_field = date_field.clone
-    date_field.content = if date_field.text.strip =~ /^\d{4}-\d{2}-\d{2}$/
-      Date.parse(date_field.text).strftime(@config.full_date_format)
-    elsif date_field.text.strip =~ /^\d{4}-\d{2}$/
-      Date.parse("#{date_field.text}-01").strftime(@config.short_date_format)
-    else
+    date_field.content = begin
+      if date_field.text.strip =~ /^\d{4}-\d{2}-\d{2}$/
+        Date.parse(date_field.text).strftime(@config.full_date_format)
+      elsif date_field.text.strip =~ /^\d{4}-\d{2}$/
+        Date.parse("#{date_field.text}-01").strftime(@config.short_date_format)
+      else
+        date_field.content
+      end
+    rescue
       date_field.content
     end
     date_field
diff --git a/spec/fields/imprint_spec.rb b/spec/fields/imprint_spec.rb
index 3b58b05..ea103e9 100644
--- a/spec/fields/imprint_spec.rb
+++ b/spec/fields/imprint_spec.rb
@@ -35,6 +35,7 @@ def mods_display_format_date_imprint(mods_record)
     @encoded_place = Stanford::Mods::Record.new.from_str(encoded_place, false).origin_info
     @encoded_dates = Stanford::Mods::Record.new.from_str(encoded_dates, false).origin_info
     @bad_dates = Stanford::Mods::Record.new.from_str(bad_dates, false).origin_info
+    @invalid_dates = Stanford::Mods::Record.new.from_str(invalid_dates, false).origin_info
   end
 
   describe "labels" do
@@ -193,6 +194,11 @@ def mods_display_format_date_imprint(mods_record)
           field.values.join.should_not include "9999"
         end
       end
+      it "should handle invalid dates by returning the original value" do
+        fields = mods_display_imprint(@invalid_dates).fields
+        fields.length.should == 2
+        fields.last.values.should == ["1920-09-00"]
+      end
     end
   end
   describe "place processing" do
diff --git a/spec/fixtures/imprint_fixtures.rb b/spec/fixtures/imprint_fixtures.rb
index e4f1b90..176e11b 100644
--- a/spec/fixtures/imprint_fixtures.rb
+++ b/spec/fixtures/imprint_fixtures.rb
@@ -265,4 +265,16 @@ def bad_dates
       </mods>
     MODS
   end
+  def invalid_dates
+    <<-MODS
+      <mods>
+        <originInfo>
+          <place>
+             <placeTerm>United States</placeTerm>
+           </place>
+           <dateModified encoding="w3cdtf">1920-09-00</dateModified>
+        </originInfo>
+      </mods>
+    MODS
+  end
 end
\ No newline at end of file