diff --git a/unix/CMakeLists.txt b/unix/CMakeLists.txt
index 3ffe79c..8b2c70e 100644
--- a/unix/CMakeLists.txt
+++ b/unix/CMakeLists.txt
@@ -4,5 +4,5 @@
 add_subdirectory(vncpasswd)
 add_subdirectory(x0vncserver)
 
-install(PROGRAMS vncserver DESTINATION bin)
-install(FILES vncserver.man DESTINATION man/man1 RENAME vncserver.1)
+install(PROGRAMS vncserver DESTINATION ${BIN_DIR})
+install(FILES vncserver.man DESTINATION ${MAN_DIR}/man1 RENAME vncserver.1)
diff --git a/unix/vncconfig/CMakeLists.txt b/unix/vncconfig/CMakeLists.txt
index 1f67479..959681f 100644
--- a/unix/vncconfig/CMakeLists.txt
+++ b/unix/vncconfig/CMakeLists.txt
@@ -11,5 +11,5 @@
 
 target_link_libraries(vncconfig tx rfb network rdr ${X11_LIBRARIES})
 
-install(TARGETS vncconfig DESTINATION bin)
-install(FILES vncconfig.man DESTINATION man/man1 RENAME vncconfig.1)
+install(TARGETS vncconfig DESTINATION ${BIN_DIR})
+install(FILES vncconfig.man DESTINATION ${MAN_DIR}/man1 RENAME vncconfig.1)
diff --git a/unix/vncpasswd/CMakeLists.txt b/unix/vncpasswd/CMakeLists.txt
index 77640ca..d1425af 100644
--- a/unix/vncpasswd/CMakeLists.txt
+++ b/unix/vncpasswd/CMakeLists.txt
@@ -5,5 +5,5 @@
 
 target_link_libraries(vncpasswd tx rfb rdr os)
 
-install(TARGETS vncpasswd DESTINATION bin)
-install(FILES vncpasswd.man DESTINATION man/man1 RENAME vncpasswd.1)
+install(TARGETS vncpasswd DESTINATION ${BIN_DIR})
+install(FILES vncpasswd.man DESTINATION ${MAN_DIR}/man1 RENAME vncpasswd.1)
diff --git a/unix/x0vncserver/CMakeLists.txt b/unix/x0vncserver/CMakeLists.txt
index bdd6482..3f41db7 100644
--- a/unix/x0vncserver/CMakeLists.txt
+++ b/unix/x0vncserver/CMakeLists.txt
@@ -23,5 +23,5 @@
   message(WARNING "No XTest extension.  x0vncserver will be view-only.")
 endif()
 
-install(TARGETS x0vncserver DESTINATION bin)
-install(FILES x0vncserver.man DESTINATION man/man1 RENAME x0vncserver.1)
+install(TARGETS x0vncserver DESTINATION ${BIN_DIR})
+install(FILES x0vncserver.man DESTINATION ${MAN_DIR}/man1 RENAME x0vncserver.1)