diff --git a/libretroshare/src/libretroshare.pro b/libretroshare/src/libretroshare.pro
index 6862c1b6c..c64f349a3 100644
--- a/libretroshare/src/libretroshare.pro
+++ b/libretroshare/src/libretroshare.pro
@@ -165,7 +165,7 @@ linux-* {
 }
 
 unix {
-	DEFINES *= LIB_DIR=\"\\\"$${LIB_DIR}\\\"\"
+	DEFINES *= PLUGIN_DIR=\"\\\"$${PLUGIN_DIR}\\\"\"
 	DEFINES *= DATA_DIR=\"\\\"$${DATA_DIR}\\\"\"
 
 	## where to put the librarys interface
diff --git a/libretroshare/src/rsserver/rsinit.cc b/libretroshare/src/rsserver/rsinit.cc
index 766e9bcf7..833579c7d 100644
--- a/libretroshare/src/rsserver/rsinit.cc
+++ b/libretroshare/src/rsserver/rsinit.cc
@@ -1251,7 +1251,7 @@ int RsServer::StartupRetroShare()
 	std::vector<std::string> plugins_directories ;
 
 #ifndef WINDOWS_SYS
-	plugins_directories.push_back(std::string(LIB_DIR) + "/retroshare/extensions6/") ;
+	plugins_directories.push_back(std::string(PLUGIN_DIR)) ;
 #endif
 	std::string extensions_dir = rsAccounts->PathBaseDirectory() + "/extensions6/" ;
 	plugins_directories.push_back(extensions_dir) ;
diff --git a/plugins/Common/retroshare_plugin.pri b/plugins/Common/retroshare_plugin.pri
index 3c9644c55..d9a03cdc6 100644
--- a/plugins/Common/retroshare_plugin.pri
+++ b/plugins/Common/retroshare_plugin.pri
@@ -7,7 +7,7 @@ DEPENDPATH += ../../libretroshare/src/ ../../retroshare-gui/src/
 INCLUDEPATH += ../../libretroshare/src/ ../../retroshare-gui/src/
 
 unix {
-	target.path = "$${LIB_DIR}/retroshare/extensions6"
+	target.path = "$${PLUGIN_DIR}"
 	INSTALLS += target
 }
 
diff --git a/retroshare.pri b/retroshare.pri
index 6bbebfb39..6e2ea0c9e 100644
--- a/retroshare.pri
+++ b/retroshare.pri
@@ -7,6 +7,7 @@ unix {
 	isEmpty(INC_DIR)  { INC_DIR  = "$${PREFIX}/include/retroshare06" }
 	isEmpty(LIB_DIR)  { LIB_DIR  = "$${PREFIX}/lib" }
 	isEmpty(DATA_DIR) { DATA_DIR = "$${PREFIX}/share/RetroShare06" }
+	isEmpty(PLUGIN_DIR) { PLUGIN_DIR  = "$${LIB_DIR}/retroshare/extensions6" }
 }
 
 unfinished {