diff --git a/sigal/image.py b/sigal/image.py
index 44c59d9..277cdd2 100644
--- a/sigal/image.py
+++ b/sigal/image.py
@@ -137,7 +137,7 @@ def _get_exif_data(filename):
 def _get_degrees(v):
     d = float(v[0][0]) / float(v[0][1])
     m = float(v[1][0]) / float(v[1][1])
-    s = float(v[2][0]) / float(v[1][1])
+    s = float(v[2][0]) / float(v[2][1])
     return d + (m / 60.0) + (s / 3600.0)