diff --git a/src/lex/lex.c b/src/lex/lex.c
index 5269db3d..36cc5d52 100644
--- a/src/lex/lex.c
+++ b/src/lex/lex.c
@@ -881,7 +881,7 @@ css_error Hash(css_lexer *lexer, css_token **token)
 		return error;
 
 	/* Require at least one NMChar otherwise, we're just a raw '#' */
-	if (lexer->bytesReadForToken - lexer->context.origBytes > 0)
+	if (lexer->bytesReadForToken > lexer->context.origBytes)
 		return emitToken(lexer, CSS_TOKEN_HASH, token);
 
 	return emitToken(lexer, CSS_TOKEN_CHAR, token);
diff --git a/src/parse/language.c b/src/parse/language.c
index 936ab3d4..2121a05e 100644
--- a/src/parse/language.c
+++ b/src/parse/language.c
@@ -1194,7 +1194,7 @@ css_error parseNth(css_language *c,
 					data[consumed] != 'N'))
 				return CSS_INVALID;
 
-			if (len - (++consumed) > 0) {
+			if (++consumed < len) {
 				if (data[consumed] != '-')
 					return CSS_INVALID;
 
@@ -1202,7 +1202,7 @@ css_error parseNth(css_language *c,
 				sign = -1;
 				had_sign = true;
 
-				if (len - (++consumed) > 0) {
+				if (++consumed < len) {
 					size_t bstart;
 
 					/* Reject additional sign */