diff --git a/src/fmdb/FMDatabase.m b/src/fmdb/FMDatabase.m
index 9e1b4d46..566b066d 100644
--- a/src/fmdb/FMDatabase.m
+++ b/src/fmdb/FMDatabase.m
@@ -402,7 +402,7 @@ + (NSDateFormatter *)storeableDateFormat:(NSString *)format {
     NSDateFormatter *result = FMDBReturnAutoreleased([[NSDateFormatter alloc] init]);
     result.dateFormat = format;
     result.timeZone = [NSTimeZone timeZoneForSecondsFromGMT:0];
-    result.locale = FMDBReturnAutoreleased([[NSLocale alloc] initWithLocaleIdentifier:@"en_US"]);
+    result.locale = FMDBReturnAutoreleased([[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"]);
     return result;
 }