diff --git a/lib/galaxy/datatypes/tabular.py b/lib/galaxy/datatypes/tabular.py
index b7940d34f4b..1d04a03a4a6 100644
--- a/lib/galaxy/datatypes/tabular.py
+++ b/lib/galaxy/datatypes/tabular.py
@@ -1193,6 +1193,8 @@ class MatrixMarket(TabularData):
     True
     >>> MatrixMarket().sniff( get_test_fname( '2.mtx' ) )
     True
+    >>> MatrixMarket().sniff( get_test_fname( '3.mtx' ) )
+    True
     """
     file_ext = "mtx"
 
@@ -1200,7 +1202,7 @@ class MatrixMarket(TabularData):
         super(MatrixMarket, self).__init__(**kwd)
 
     def sniff_prefix(self, file_prefix):
-        return file_prefix.startswith('%%MatrixMarket matrix coordinate real general')
+        return file_prefix.startswith('%%MatrixMarket matrix coordinate')
 
     def set_meta(self, dataset, overwrite=True, skip=None, max_data_lines=5, **kwd):
         if dataset.has_data():
diff --git a/lib/galaxy/datatypes/test/3.mtx b/lib/galaxy/datatypes/test/3.mtx
new file mode 100644
index 00000000000..cc785471635
--- /dev/null
+++ b/lib/galaxy/datatypes/test/3.mtx
@@ -0,0 +1,15 @@
+%%MatrixMarket matrix coordinate integer general
+%
+343 12 12
+201 1 1
+123 2 1
+283 3 1
+318 4 1
+175 5 1
+12 6 1
+132 7 1
+197 8 1
+222 9 1
+236 10 1
+317 11 1
+127 12 1