diff --git a/content.py b/content.py
index a1073d02..5237b235 100644
--- a/content.py
+++ b/content.py
@@ -681,10 +681,10 @@ def saveFontInFormPOST(fontBytes, debug: bool,
     # directly search the binary array for the beginning
     # of a font file
     extensionList = {
-        'wOFF': 'application/font-woff',
-        'wOF2': 'application/font-woff2',
-        'ttf': 'application/x-font-truetype',
-        'OTTO': 'application/x-font-opentype'
+        'wOFF': 'font/woff',
+        'wOF2': 'font/woff2',
+        'ttf': 'font/ttf',
+        'OTTO': 'font/otf'
     }
     detectedExtension = None
     for extension, contentType in extensionList.items():
diff --git a/daemon.py b/daemon.py
index daba5e1f..4ba589e3 100644
--- a/daemon.py
+++ b/daemon.py
@@ -1112,13 +1112,13 @@ class PubServer(BaseHTTPRequestHandler):
                fontStr.endswith('.woff') or \
                fontStr.endswith('.woff2'):
                 if fontStr.endswith('.otf'):
-                    fontType = 'application/x-font-opentype'
+                    fontType = 'font/otf'
                 elif fontStr.endswith('.ttf'):
-                    fontType = 'application/x-font-truetype'
+                    fontType = 'font/ttf'
                 elif fontStr.endswith('.woff'):
-                    fontType = 'application/font-woff'
+                    fontType = 'font/woff'
                 else:
-                    fontType = 'application/font-woff2'
+                    fontType = 'font/woff2'
                 fontFilename = \
                     self.server.baseDir + '/fonts/' + fontStr
                 if self._etag_exists(fontFilename):