diff --git a/lutin_river.py b/lutin_river.py
index b04455d..96bac4b 100644
--- a/lutin_river.py
+++ b/lutin_river.py
@@ -21,16 +21,8 @@ def create(target):
 		'river/io/NodeAEC.cpp',
 		'river/io/Manager.cpp'
 		])
-	if False:
-		myModule.add_optionnal_module_depend('airtaudio', "__AIRTAUDIO_INFERFACE__")
-		myModule.add_optionnal_module_depend('portaudio', "__PORTAUDIO_INFERFACE__")
-	else:
-		myModule.compile_flags_CC([
-			'-D__AIRTAUDIO_INFERFACE__',
-			'-D__PORTAUDIO_INFERFACE__'
-			])
-		myModule.add_module_depend(['airtaudio', 'portaudio'])
-	
+	myModule.add_optionnal_module_depend('airtaudio', "__AIRTAUDIO_INFERFACE__")
+	myModule.add_optionnal_module_depend('portaudio', "__PORTAUDIO_INFERFACE__")
 	myModule.add_module_depend(['audio', 'drain', 'ejson'])
 	myModule.add_export_path(tools.get_current_path(__file__))
 	
diff --git a/river/io/Manager.cpp b/river/io/Manager.cpp
index 4c87b39..1f3bae7 100644
--- a/river/io/Manager.cpp
+++ b/river/io/Manager.cpp
@@ -99,17 +99,23 @@ std::shared_ptr<river::io::Node> river::io::Manager::getNode(const std::string&
 	if (tmpObject != nullptr) {
 		// get type : io
 		std::string ioType = tmpObject->getStringValue("io", "error");
+		#ifdef __AIRTAUDIO_INFERFACE__
 		if (    ioType == "input"
 		     || ioType == "output") {
 			std::shared_ptr<river::io::Node> tmp = river::io::NodeAirTAudio::create(_name, tmpObject);
 			m_list.push_back(tmp);
 			return tmp;
-		} else if (    ioType == "PAinput"
-		            || ioType == "PAoutput") {
+		} else
+		#endif
+		#ifdef __PORTAUDIO_INFERFACE__
+		if (    ioType == "PAinput"
+		     || ioType == "PAoutput") {
 			std::shared_ptr<river::io::Node> tmp = river::io::NodePortAudio::create(_name, tmpObject);
 			m_list.push_back(tmp);
 			return tmp;
-		} else if (ioType == "aec") {
+		} else 
+		#endif
+		if (ioType == "aec") {
 			std::shared_ptr<river::io::Node> tmp = river::io::NodeAEC::create(_name, tmpObject);
 			m_list.push_back(tmp);
 			return tmp;
diff --git a/river/io/NodeAirTAudio.cpp b/river/io/NodeAirTAudio.cpp
index c610ff6..5b80764 100644
--- a/river/io/NodeAirTAudio.cpp
+++ b/river/io/NodeAirTAudio.cpp
@@ -4,6 +4,8 @@
  * @license APACHE v2.0 (see license file)
  */
 
+#ifdef __AIRTAUDIO_INFERFACE__
+
 #include <river/io/NodeAirTAudio.h>
 #include <river/debug.h>
 
@@ -261,3 +263,5 @@ void river::io::NodeAirTAudio::stop() {
 		RIVER_ERROR("Stop stream : '" << m_name << "' mode=" << (m_isInput?"input":"output") << " can not stop stream ... " << err);
 	}
 }
+
+#endif
diff --git a/river/io/NodeAirTAudio.h b/river/io/NodeAirTAudio.h
index 66b86c2..cb7a491 100644
--- a/river/io/NodeAirTAudio.h
+++ b/river/io/NodeAirTAudio.h
@@ -7,6 +7,8 @@
 #ifndef __RIVER_IO_NODE_AIRTAUDIO_H__
 #define __RIVER_IO_NODE_AIRTAUDIO_H__
 
+#ifdef __AIRTAUDIO_INFERFACE__
+
 #include <river/io/Node.h>
 
 namespace river {
@@ -49,6 +51,7 @@ namespace river {
 		};
 	}
 }
+#endif
 
 #endif
 
diff --git a/river/io/NodePortAudio.cpp b/river/io/NodePortAudio.cpp
index 5ce779c..e06e801 100644
--- a/river/io/NodePortAudio.cpp
+++ b/river/io/NodePortAudio.cpp
@@ -4,6 +4,8 @@
  * @license APACHE v2.0 (see license file)
  */
 
+#ifdef __PORTTAUDIO_INFERFACE__
+
 #include <river/io/NodePortAudio.h>
 #include <river/debug.h>
 
@@ -150,3 +152,5 @@ void river::io::NodePortAudio::stop() {
 		RIVER_ERROR("Start stream : '" << m_name << "' mode=" << (m_isInput?"input":"output") << " can not stop stream ... " << Pa_GetErrorText(err));
 	}
 }
+#endif
+
diff --git a/river/io/NodePortAudio.h b/river/io/NodePortAudio.h
index 3525581..031b27b 100644
--- a/river/io/NodePortAudio.h
+++ b/river/io/NodePortAudio.h
@@ -7,6 +7,8 @@
 #ifndef __RIVER_IO_NODE_PORTAUDIO_H__
 #define __RIVER_IO_NODE_PORTAUDIO_H__
 
+#ifdef __PORTTAUDIO_INFERFACE__
+
 #include <river/Interface.h>
 #include <river/io/Node.h>
 #include <portaudio.h>
@@ -41,6 +43,7 @@ namespace river {
 		};
 	}
 }
+#endif
 
 #endif