diff --git a/include/rexy/detail/format/formatter.tpp b/include/rexy/detail/format/formatter.tpp
index 15ea065..81ac421 100644
--- a/include/rexy/detail/format/formatter.tpp
+++ b/include/rexy/detail/format/formatter.tpp
@@ -299,6 +299,7 @@ namespace rexy::fmt::detail{
 				case presentation::string_t:
 					break;
 				case presentation::int_t:
+				case presentation::char_t:
 					return perform_standard_format<Char>(static_cast<unsigned char>(b), std::move(out), specs, loc);
 				default:
 					REXY_THROW_FORMAT_ERROR("Invalid type argument for bool");
@@ -378,7 +379,7 @@ namespace rexy::fmt::detail{
 					base = 2;
 					break;
 				case 'o':
-					prefix = "0";
+					prefix = b == 0 ? "" : "0";
 					base = 8;
 					break;
 				case 'x':
@@ -571,7 +572,7 @@ namespace rexy::fmt::detail{
 			const auto outputter = [&](OutIt o){
 				Char radix_char = '.';
 				o = perform_format_write_sign(std::move(o), specs.sign, f);
-				if(should_zero_fill && specs.width > total_width){
+				if(should_zero_fill && specs.width > total_width && !(is_infinity || is_nan)){
 					const int fill_width = specs.width - total_width;
 					for(int i = 0;i < fill_width;++i){
 						*o++ = '0';
diff --git a/include/rexy/detail/format/specs_handler.tpp b/include/rexy/detail/format/specs_handler.tpp
index 0d27e4c..aacc61e 100644
--- a/include/rexy/detail/format/specs_handler.tpp
+++ b/include/rexy/detail/format/specs_handler.tpp
@@ -312,7 +312,7 @@ namespace rexy::fmt::detail{
 				if(chosen == presentation::default_t){
 					chosen = presentation::string_t;
 				}
-				if(chosen != presentation::string_t && chosen != presentation::int_t){
+				if(chosen != presentation::string_t && chosen != presentation::int_t && chosen != presentation::char_t){
 					REXY_THROW_FORMAT_ERROR("Invalid type specifier for bool");
 				}
 				break;
diff --git a/include/rexy/format.hpp b/include/rexy/format.hpp
index 4eeb343..c16b3cf 100644
--- a/include/rexy/format.hpp
+++ b/include/rexy/format.hpp
@@ -36,6 +36,7 @@ REXY_REQUIRES_CPP20;
 #include "detail/format/arg_store.hpp"
 #include "detail/format/format_string.hpp"
 #include "detail/format/format_args.hpp"
+#include "detail/format/format_error.hpp"
 
 #include <cstdio> //FILE