diff -Naur gammu-1.33.0.orig/contrib/CMakeLists.txt gammu-1.33.0/contrib/CMakeLists.txt
--- gammu-1.33.0.orig/contrib/CMakeLists.txt	2013-12-26 20:56:22.887772110 +0100
+++ gammu-1.33.0/contrib/CMakeLists.txt	2013-12-26 20:57:04.386276037 +0100
@@ -85,7 +85,7 @@
 if (INSTALL_BASH_COMPLETION)
     install (
         FILES bash-completion/gammu
-        DESTINATION "/etc/bash_completion.d"
+        DESTINATION "${CMAKE_INSTALL_PREFIX}/etc/bash_completion.d"
         COMPONENT "bash"
         )
 endif (INSTALL_BASH_COMPLETION)