diff --git a/src/pugixml.cpp b/src/pugixml.cpp
index 29abdcd..ac2308e 100644
--- a/src/pugixml.cpp
+++ b/src/pugixml.cpp
@@ -2436,7 +2436,7 @@ namespace pugi
         n._root->destroy();
 	}
 
-	xml_node xml_node::find_child_by_attribute(const char* name, const char* attr_name, const char* attr_value)
+	xml_node xml_node::find_child_by_attribute(const char* name, const char* attr_name, const char* attr_value) const
 	{
 		if (empty()) return xml_node();
 		
@@ -2451,7 +2451,7 @@ namespace pugi
 		return xml_node();
 	}
 
-	xml_node xml_node::find_child_by_attribute_w(const char* name, const char* attr_name, const char* attr_value)
+	xml_node xml_node::find_child_by_attribute_w(const char* name, const char* attr_name, const char* attr_value) const
 	{
 		if (empty()) return xml_node();
 		
@@ -2466,7 +2466,7 @@ namespace pugi
 		return xml_node();
 	}
 
-	xml_node xml_node::find_child_by_attribute(const char* attr_name, const char* attr_value)
+	xml_node xml_node::find_child_by_attribute(const char* attr_name, const char* attr_value) const
 	{
 		if (empty()) return xml_node();
 		
@@ -2478,7 +2478,7 @@ namespace pugi
 		return xml_node();
 	}
 
-	xml_node xml_node::find_child_by_attribute_w(const char* attr_name, const char* attr_value)
+	xml_node xml_node::find_child_by_attribute_w(const char* attr_name, const char* attr_value) const
 	{
 		if (empty()) return xml_node();
 		
diff --git a/src/pugixml.hpp b/src/pugixml.hpp
index aaf4582..441b0fe 100644
--- a/src/pugixml.hpp
+++ b/src/pugixml.hpp
@@ -1104,7 +1104,7 @@ namespace pugi
 		 * \param attr_value - attribute value of child node
 		 * \return first matching child node, or empty node
 		 */
-		xml_node find_child_by_attribute(const char* name, const char* attr_name, const char* attr_value);
+		xml_node find_child_by_attribute(const char* name, const char* attr_name, const char* attr_value) const;
 
 		/**
 		 * Find child node with the specified name that has specified attribute (use pattern matching for node name and attribute name/value)
@@ -1114,7 +1114,7 @@ namespace pugi
 		 * \param attr_value - pattern for attribute value of child node
 		 * \return first matching child node, or empty node
 		 */
-		xml_node find_child_by_attribute_w(const char* name, const char* attr_name, const char* attr_value);
+		xml_node find_child_by_attribute_w(const char* name, const char* attr_name, const char* attr_value) const;
 
 		/**
 		 * Find child node that has specified attribute
@@ -1123,7 +1123,7 @@ namespace pugi
 		 * \param attr_value - attribute value of child node
 		 * \return first matching child node, or empty node
 		 */
-		xml_node find_child_by_attribute(const char* attr_name, const char* attr_value);
+		xml_node find_child_by_attribute(const char* attr_name, const char* attr_value) const;
 
 		/**
 		 * Find child node that has specified attribute (use pattern matching for attribute name/value)
@@ -1132,7 +1132,7 @@ namespace pugi
 		 * \param attr_value - pattern for attribute value of child node
 		 * \return first matching child node, or empty node
 		 */
-		xml_node find_child_by_attribute_w(const char* attr_name, const char* attr_value);
+		xml_node find_child_by_attribute_w(const char* attr_name, const char* attr_value) const;
 
 	#ifndef PUGIXML_NO_STL
 		/**