diff --git a/ext/com_dotnet/com_com.c b/ext/com_dotnet/com_com.c
index cf44858c93b..cbbaf31277e 100644
--- a/ext/com_dotnet/com_com.c
+++ b/ext/com_dotnet/com_com.c
@@ -281,7 +281,7 @@ PHP_FUNCTION(com_get_active_object)
 	char *module_name;
 	size_t module_name_len;
 	zend_long code_page;
-	bool code_page_is_null = 1;
+	bool code_page_is_null = true;
 	IUnknown *unk = NULL;
 	IDispatch *obj = NULL;
 	HRESULT res;
diff --git a/ext/com_dotnet/com_misc.c b/ext/com_dotnet/com_misc.c
index a5de6415b9a..6c80bd2b9e2 100644
--- a/ext/com_dotnet/com_misc.c
+++ b/ext/com_dotnet/com_misc.c
@@ -73,7 +73,7 @@ PHP_COM_DOTNET_API void php_com_wrap_variant(zval *z, VARIANT *v,
 
 	VariantInit(&obj->v);
 	VariantCopyInd(&obj->v, v);
-	obj->modified = 0;
+	obj->modified = false;
 
 	if ((V_VT(&obj->v) == VT_DISPATCH) && (V_DISPATCH(&obj->v) != NULL)) {
 		IDispatch_GetTypeInfo(V_DISPATCH(&obj->v), 0, LANG_NEUTRAL, &obj->typeinfo);