diff --git a/babybuddy/formats/en/formats.py b/babybuddy/formats/en/formats.py
index 3c3ad9ca..45146826 100644
--- a/babybuddy/formats/en/formats.py
+++ b/babybuddy/formats/en/formats.py
@@ -4,7 +4,7 @@ from django.conf.locale.en import formats
 # Override the regular locale settings to support 24 hour time.
 if settings.USE_24_HOUR_TIME_FORMAT:
     DATETIME_FORMAT = 'N j, Y, H:i:s'
-    DATETIME_INPUT_FORMATS = [
+    CUSTOM_INPUT_FORMATS = [
         '%m/%d/%Y %H:%M:%S',    # '10/25/2006 14:30:59'
         '%m/%d/%Y %H:%M',       # '10/25/2006 14:30'
     ]
@@ -13,10 +13,10 @@ if settings.USE_24_HOUR_TIME_FORMAT:
 else:
     # These formats are added to support the locale style of Baby Buddy's
     # frontend library, which uses momentjs.
-    DATETIME_INPUT_FORMATS = [
+    CUSTOM_INPUT_FORMATS = [
         '%m/%d/%Y %I:%M:%S %p',  # '10/25/2006 2:30:59 PM'
         '%m/%d/%Y %I:%M %p',     # '10/25/2006 2:30 PM'
     ]
 
 # Append all other input formats from the base locale.
-DATETIME_INPUT_FORMATS.append(formats.DATETIME_INPUT_FORMATS)
+DATETIME_INPUT_FORMATS = CUSTOM_INPUT_FORMATS + formats.DATETIME_INPUT_FORMATS