diff --git a/wrappers/csharp/genwrapper.py b/wrappers/csharp/genwrapper.py
index e5aad72a7..0dab2d818 100644
--- a/wrappers/csharp/genwrapper.py
+++ b/wrappers/csharp/genwrapper.py
@@ -87,7 +87,7 @@ class CsharpTranslator(object):
 				return 'void'
 		elif _type.name == 'boolean':
 			if dllImport:
-				res = 'int' # In C the bool_t is an integer
+				res = 'char'
 			else:
 				res = 'bool'
 		elif _type.name == 'integer':
@@ -223,7 +223,7 @@ class CsharpTranslator(object):
 					else:
 						methodDict['impl']['c_args'] += '(int)' + self.translate_argument_name(arg.name)
 				elif self.translate_type(arg.type, False, False) == "bool":
-					methodDict['impl']['c_args'] += self.translate_argument_name(arg.name) + " ? 1 : 0"
+					methodDict['impl']['c_args'] += self.translate_argument_name(arg.name) + " ? '1' : '0'"
 				elif self.get_class_array_type(self.translate_type(arg.type, False, False)) is not None:
 					listtype = self.get_class_array_type(self.translate_type(arg.type, False, False))
 					if listtype == 'string':
diff --git a/wrappers/csharp/wrapper_impl.mustache b/wrappers/csharp/wrapper_impl.mustache
index f66c504fe..1c33e7aeb 100644
--- a/wrappers/csharp/wrapper_impl.mustache
+++ b/wrappers/csharp/wrapper_impl.mustache
@@ -484,7 +484,7 @@ namespace Linphone
 				{{#exception}}if (exception_result != 0) throw new LinphoneException("{{property_name}} setter returned value " + exception_result);{{/exception}}
 				{{/is_string}}
 				{{#is_bool}}
-				{{#exception}}int exception_result = {{/exception}}{{setter_c_name}}({{setter_nativePtr}}value ? 1 : 0);
+				{{#exception}}int exception_result = {{/exception}}{{setter_c_name}}({{setter_nativePtr}}value ? '1' : '0');
 				{{#exception}}if (exception_result != 0) throw new LinphoneException("{{property_name}} setter returned value " + exception_result);{{/exception}}
 				{{/is_bool}}
 				{{#is_class}}
@@ -525,7 +525,7 @@ namespace Linphone
 			return Marshal.PtrToStringAnsi(stringPtr);
 			{{/is_string}}
 			{{#is_bool}}
-			{{return}}{{c_name}}({{nativePtr}}{{c_args}}) == 0 ? false : true;
+			{{return}}{{c_name}}({{nativePtr}}{{c_args}}) == '0' ? false : true;
 			{{/is_bool}}
 			{{#is_class}}
 			IntPtr ptr = {{c_name}}({{nativePtr}}{{c_args}});