diff --git a/alib2aux/src/convert/common/converterCommon.hpp b/alib2aux/src/convert/common/converterCommon.hpp
index f7008a0aafe54af952fa427cd3073bc2fc6be936..f18895e4277e17ab4f4456a89d80c505f22764f5 100644
--- a/alib2aux/src/convert/common/converterCommon.hpp
+++ b/alib2aux/src/convert/common/converterCommon.hpp
@@ -10,7 +10,7 @@
 
 namespace convert {
 
-auto replaceInplace = [] ( std::string & str, const std::string & what, const std::string & with ) {
+inline auto replaceInplace = [] ( std::string & str, const std::string & what, const std::string & with ) {
 	size_t index = 0;
 
 	while ( ( index = str.find ( what, index ) ) != std::string::npos ) {
@@ -19,7 +19,7 @@ auto replaceInplace = [] ( std::string & str, const std::string & what, const st
 	}
 };
 
-auto replace = [] ( std::string str, const std::string & what, const std::string & with ) {
+inline auto replace = [] ( std::string str, const std::string & what, const std::string & with ) {
 	replaceInplace ( str, what, with );
 	return str;
 };