diff -ur a/platforms/unix/unix.pro b/platforms/unix/unix.pro
--- a/platforms/unix/unix.pro	2008-09-01 03:40:56.000000000 +0300
+++ b/platforms/unix/unix.pro	2017-03-01 15:44:50.201858265 +0200
@@ -11,11 +11,10 @@
 
 
 unix {
- PREFIX = /usr
  DEFINES += SKINS_PATH=\\\"$$PREFIX/share/launchy/skins/\\\" \
-           PLUGINS_PATH=\\\"$$PREFIX/lib/launchy/plugins/\\\" \
-           PLATFORMS_PATH=\\\"$$PREFIX/lib/launchy/\\\"
- target.path = $$PREFIX/lib/launchy/
+           PLUGINS_PATH=\\\"$$PREFIX/$$LIBDIR/launchy/plugins/\\\" \
+           PLATFORMS_PATH=\\\"$$PREFIX/$$LIBDIR/launchy/\\\"
+ target.path = $$PREFIX/$$LIBDIR/launchy/
  INSTALLS += target
 }
 
diff -ur a/plugins/calcy/calcy.pro b/plugins/calcy/calcy.pro
--- a/plugins/calcy/calcy.pro	2010-03-08 01:02:22.000000000 +0200
+++ b/plugins/calcy/calcy.pro	2017-03-01 15:46:49.252849881 +0200
@@ -26,9 +26,8 @@
 
 
 unix:!macx {
-    PREFIX = /usr
-    target.path = $$PREFIX/lib/launchy/plugins/
-    icon.path = $$PREFIX/lib/launchy/plugins/icons/
+    target.path = $$PREFIX/$$LIBDIR/launchy/plugins/
+    icon.path = $$PREFIX/$$LIBDIR/launchy/plugins/icons/
     icon.files = calcy.png
     INSTALLS += target \
         icon
diff -ur a/plugins/gcalc/gcalc.pro b/plugins/gcalc/gcalc.pro
--- a/plugins/gcalc/gcalc.pro	2010-02-15 23:07:34.000000000 +0200
+++ b/plugins/gcalc/gcalc.pro	2017-03-01 15:48:00.542647288 +0200
@@ -19,10 +19,9 @@
 if(!debug_and_release|build_pass):CONFIG(debug, debug|release):DESTDIR = ../../debug/plugins
 if(!debug_and_release|build_pass):CONFIG(release, debug|release):DESTDIR = ../../release/plugins
 unix:!macx {
-    PREFIX = /usr
-    target.path = $$PREFIX/lib/launchy/plugins/
+    target.path = $$PREFIX/$$LIBDIR/launchy/plugins/
     
-    # icon.path = $$PREFIX/lib/launchy/plugins/icons/
+    # icon.path = $$PREFIX/$$LIBDIR/launchy/plugins/icons/
     # icon.files = gcalc.png
     INSTALLS += target
 }
diff -ur a/plugins/runner/runner.pro b/plugins/runner/runner.pro
--- a/plugins/runner/runner.pro	2010-02-15 23:07:34.000000000 +0200
+++ b/plugins/runner/runner.pro	2017-03-01 15:46:22.202306212 +0200
@@ -42,9 +42,8 @@
 }
 
 unix:!macx {
- PREFIX = /usr
- target.path = $$PREFIX/lib/launchy/plugins/
- icon.path = $$PREFIX/lib/launchy/plugins/icons/
+ target.path = $$PREFIX/$$LIBDIR/launchy/plugins/
+ icon.path = $$PREFIX/$$LIBDIR/launchy/plugins/icons/
  icon.files = runner.png
  INSTALLS += target icon
 }
diff -ur a/plugins/verby/verby.pro b/plugins/verby/verby.pro
--- a/plugins/verby/verby.pro	2010-02-15 23:07:34.000000000 +0200
+++ b/plugins/verby/verby.pro	2017-03-01 15:47:09.785503507 +0200
@@ -31,9 +31,8 @@
         /WX
 }
 unix:!macx {
-    PREFIX = /usr
-    target.path = $$PREFIX/lib/launchy/plugins/
-    icon.path = $$PREFIX/lib/launchy/plugins/icons/
+    target.path = $$PREFIX/$$LIBDIR/launchy/plugins/
+    icon.path = $$PREFIX/$$LIBDIR/launchy/plugins/icons/
     icon.files = verby.png copy.png opencontainer.png properties.png run.png
     INSTALLS += target \
         icon
diff -ur a/plugins/weby/weby.pro b/plugins/weby/weby.pro
--- a/plugins/weby/weby.pro	2010-02-15 23:07:34.000000000 +0200
+++ b/plugins/weby/weby.pro	2017-03-01 15:47:30.764149617 +0200
@@ -32,9 +32,8 @@
 if(!debug_and_release|build_pass):CONFIG(debug, debug|release):DESTDIR = ../../debug/plugins
 if(!debug_and_release|build_pass):CONFIG(release, debug|release):DESTDIR = ../../release/plugins
 unix:!macx {
-    PREFIX = /usr
-    target.path = $$PREFIX/lib/launchy/plugins/
-    icon.path = $$PREFIX/lib/launchy/plugins/icons/
+    target.path = $$PREFIX/$$LIBDIR/launchy/plugins/
+    icon.path = $$PREFIX/$$LIBDIR/launchy/plugins/icons/
     icon.files = weby.png
     INSTALLS += target \
         icon
diff -ur a/src/src.pro b/src/src.pro
--- a/src/src.pro	2017-03-01 15:50:28.430152700 +0200
+++ b/src/src.pro	2017-03-01 15:51:18.931300883 +0200
@@ -71,11 +71,10 @@
                 platform_base_hotkey.h \
                 platform_base_hottrigger.h
 
-    PREFIX = /usr
     LIBS += -lX11 -lXext -lXrender
     DEFINES += SKINS_PATH=\\\"$$PREFIX/share/launchy/skins/\\\" \
-        PLUGINS_PATH=\\\"$$PREFIX/lib/launchy/plugins/\\\" \
-        PLATFORMS_PATH=\\\"$$PREFIX/lib/launchy/\\\"
+        PLUGINS_PATH=\\\"$$PREFIX/$$LIBDIR/launchy/plugins/\\\" \
+        PLATFORMS_PATH=\\\"$$PREFIX/$$LIBDIR/launchy/\\\"
     if(!debug_and_release|build_pass) { 
         CONFIG(debug, debug|release):DESTDIR = ../debug/
         CONFIG(release, debug|release):DESTDIR = ../release/
Only in a/src: src.pro.orig