diff --git a/lib/galaxy/datatypes/interval.py b/lib/galaxy/datatypes/interval.py
index a8a8c41c218..f1a6db7880c 100644
--- a/lib/galaxy/datatypes/interval.py
+++ b/lib/galaxy/datatypes/interval.py
@@ -718,11 +718,9 @@ class Gff( Tabular, _RemoteCallMixin ):
                         return False
                     if hdr[5] != '.':
                         try:
-                            score = int(hdr[5])
+                            score = float( hdr[5] )
                         except:
                             return False
-                        if (score < 0 or score > 1000):
-                            return False
                     if hdr[6] not in data.valid_strand:
                         return False
             return True
@@ -822,11 +820,9 @@ class Gff3( Gff ):
                             return False
                     if hdr[5] != '.':
                         try:
-                            score = int(hdr[5])
+                            score = float( hdr[5] )
                         except:
                             return False
-                        if (score < 0 or score > 1000):
-                            return False
                     if hdr[6] not in self.valid_gff3_strand:
                         return False
                     if hdr[7] not in self.valid_gff3_phase: