diff --git a/boost_test_schedule b/boost_test_schedule
index 174330ac08c..ef622c72324 100644
--- a/boost_test_schedule
+++ b/boost_test_schedule
@@ -89,7 +89,6 @@ config_cache/test_transaction
 config_cache/test_define_loading
 config_cache/test_lead_spaces_loading
 config_filters/test_int_add_sub_filter
-config_filters/test_int_positive_filter
 config_filters/test_int_signed_filter
 config_filters/test_without_attribute_filter
 filesystem/test_fs_game_path_reverse_engineering
diff --git a/src/serialization/string_utils.cpp b/src/serialization/string_utils.cpp
index f53342a6a84..279d03d8a1f 100644
--- a/src/serialization/string_utils.cpp
+++ b/src/serialization/string_utils.cpp
@@ -67,7 +67,7 @@ void trim(std::string_view& s)
 		return;
 	}
 	//find_last_not_of never returns npos because !s.empty()
-	size_t first_to_trim = s.find_last_not_of(" \t\r\n") + 1;
+	std::size_t first_to_trim = s.find_last_not_of(" \t\r\n") + 1;
 	s = s.substr(0, first_to_trim);
 }
 
diff --git a/src/tests/test_config_filters.cpp b/src/tests/test_config_filters.cpp
index 2788ed4fc47..52e2722292c 100644
--- a/src/tests/test_config_filters.cpp
+++ b/src/tests/test_config_filters.cpp
@@ -25,21 +25,6 @@ using namespace utils::config_filters;
 
 BOOST_AUTO_TEST_SUITE(config_filters)
 
-BOOST_AUTO_TEST_CASE(test_int_positive_filter)
-{
-	// These can be used both as the filter and as the input to be filtered,
-	// but for the unsigned_matches_if_present function only one of them is
-	// a valid filter.
-	config minus_3 {"x", -3};
-	config plus_3 {"x", 3};
-
-	BOOST_ASSERT(!unsigned_matches_if_present(minus_3, minus_3, "x"));
-	BOOST_ASSERT(unsigned_matches_if_present(plus_3, plus_3, "x"));
-
-	BOOST_ASSERT(!unsigned_matches_if_present(minus_3, plus_3, "x"));
-	BOOST_ASSERT(!unsigned_matches_if_present(plus_3, minus_3, "x"));
-}
-
 BOOST_AUTO_TEST_CASE(test_int_signed_filter)
 {
 	// These can be used both as the filter and as the input to be filtered.
diff --git a/src/utils/config_filters.cpp b/src/utils/config_filters.cpp
index fa35e1bec42..2763fb8263a 100644
--- a/src/utils/config_filters.cpp
+++ b/src/utils/config_filters.cpp
@@ -65,21 +65,6 @@ bool utils::config_filters::set_includes_if_present(const config& filter, const
 	return true;
 }
 
-bool utils::config_filters::unsigned_matches_if_present(const config& filter, const config& cfg, const std::string& attribute)
-{
-	if(!filter.has_attribute(attribute)) {
-		return true;
-	}
-	//Here, since no default variable is implemented,
-	//if the attribute is absent no checked value can match
-	//and false is automatically returned.
-	if(!cfg.has_attribute(attribute)) {
-		return false;
-	}
-
-	return in_ranges<int>(cfg[attribute].to_int(0), utils::parse_ranges_unsigned(filter[attribute].str()));
-}
-
 bool utils::config_filters::int_matches_if_present(const config& filter, const config& cfg, const std::string& attribute, utils::optional<int> def)
 {
 	if(!filter.has_attribute(attribute)) {
diff --git a/src/utils/config_filters.hpp b/src/utils/config_filters.hpp
index 3d3a8f9dd99..ff50eb1785d 100644
--- a/src/utils/config_filters.hpp
+++ b/src/utils/config_filters.hpp
@@ -43,14 +43,6 @@ bool bool_matches_if_present(const config& filter, const config& cfg, const std:
 bool double_matches_if_present(const config& filter, const config& cfg, const std::string& attribute, utils::optional<double> def = utils::nullopt);
 bool int_matches_if_present(const config& filter, const config& cfg, const std::string& attribute, utils::optional<int> def = utils::nullopt);
 
-/**
- * Restricts filters to only looking for values that are zero or more.
- *
- * A filter such as "-1-10" or "-10--1,1-10" is considered invalid and never matches anything, not
- * even a positive value that would be accepted by a stricter subset of the filter.
- */
-bool unsigned_matches_if_present(const config& filter, const config& cfg, const std::string& attribute);
-
 /**
  * Supports filters using "add" and "sub" attributes, for example a filter `add=1` matching a cfg containing either
  * `add=1` or `sub=-1`; this assumes that code elsewhere has already checked that cfg contains at most one of those