diff --git a/src/format/parse.rs b/src/format/parse.rs
index 6230c4312..ea3732b98 100644
--- a/src/format/parse.rs
+++ b/src/format/parse.rs
@@ -290,7 +290,7 @@ where
         Item::Fixed(Internal(InternalFixed { val: InternalInternal::Nanosecond6NoDot })) => 6,
         Item::Fixed(Internal(InternalFixed { val: InternalInternal::Nanosecond9NoDot })) => 9,
         Item::Literal(prefix) => {
-            prefix.as_bytes().iter().take_while(|&&c| b'0' <= c && c <= b'9').count()
+            prefix.as_bytes().iter().take_while(|&&c| (b'0'..=b'9').contains(&c)).count()
         }
         _ => 0,
     })
@@ -404,8 +404,11 @@ where
                 // Try to consume the number in the non-greedy way.
                 if max_width == usize::MAX {
                     let next_size = get_numeric_item_len(next_item).unwrap_or(0);
-                    let numeric_bytes_available =
-                        substr.as_bytes().iter().take_while(|&&c| b'0' <= c && c <= b'9').count();
+                    let numeric_bytes_available = substr
+                        .as_bytes()
+                        .iter()
+                        .take_while(|&&c| (b'0'..=b'9').contains(&c))
+                        .count();
                     max_width = numeric_bytes_available - next_size;
                 }
                 let mut v = try_consume!(scan::number(substr, min_width, max_width));
diff --git a/src/format/scan.rs b/src/format/scan.rs
index abb1a15ee..3e6cfe4b0 100644
--- a/src/format/scan.rs
+++ b/src/format/scan.rs
@@ -23,7 +23,7 @@ pub(super) fn number(s: &str, min: usize, max: usize) -> ParseResult<(&str, i64)
         return Err(TOO_SHORT);
     }
 
-    if !(min <= max) {
+    if (min > max) {
         return Err(INVALID);
     }