diff --git a/flatpages/views.py b/flatpages/views.py
index cc1feef..0b4a8a0 100644
--- a/flatpages/views.py
+++ b/flatpages/views.py
@@ -78,20 +78,20 @@ def flatpage(request, path):
         return HttpResponse(o.read(), mimetype=getmimetype(path))
 
 def getmimetype(path):
-    if path.endswith(".png"): return "image/png"
-    if path.endswith(".tif"): return "image/tif"
-    if path.endswith(".gif"): return "image/gif"
-    if path.endswith(".jpeg"): return "image/jpeg"
-    if path.endswith(".jpg"): return "image/jpeg"
-    if path.endswith("svg"): return "image/svg+xml"
-    if path.endswith(".pdf"): return "application/pdf"
-    if path.endswith(".ps"): return "application/postscript"
-    if path.endswith(".svx"): return "application/x-survex-svx"
-    if path.endswith(".3d"): return "application/x-survex-3d"
-    if path.endswith(".pos"): return "application/x-survex-pos"
-    if path.endswith(".err"): return "application/x-survex-err"
-    if path.endswith(".odt"): return "application/vnd.oasis.opendocument.text"
-    if path.endswith(".ods"): return "application/vnd.oasis.opendocument.spreadsheet"
+    if path.lower().endswith(".png"): return "image/png"
+    if path.lower().endswith(".tif"): return "image/tif"
+    if path.lower().endswith(".gif"): return "image/gif"
+    if path.lower().endswith(".jpeg"): return "image/jpeg"
+    if path.lower().endswith(".jpg"): return "image/jpeg"
+    if path.lower().endswith("svg"): return "image/svg+xml"
+    if path.lower().endswith(".pdf"): return "application/pdf"
+    if path.lower().endswith(".ps"): return "application/postscript"
+    if path.lower().endswith(".svx"): return "application/x-survex-svx"
+    if path.lower().endswith(".3d"): return "application/x-survex-3d"
+    if path.lower().endswith(".pos"): return "application/x-survex-pos"
+    if path.lower().endswith(".err"): return "application/x-survex-err"
+    if path.lower().endswith(".odt"): return "application/vnd.oasis.opendocument.text"
+    if path.lower().endswith(".ods"): return "application/vnd.oasis.opendocument.spreadsheet"
     return ""
 
 @login_required_if_public