diff --git a/CMakeLists.txt b/CMakeLists.txt
index 155672e2245a..a4b6dc0c7eda 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -176,7 +176,6 @@ set_target_properties( tint2 PROPERTIES LINK_FLAGS "-pthread -fno-strict-aliasin
 install( TARGETS tint2 DESTINATION bin )
 install( FILES tint2.svg DESTINATION ${DATADIR}/icons/hicolor/scalable/apps )
 install( FILES tint2.desktop DESTINATION ${DATADIR}/applications )
-install( CODE "execute_process(COMMAND gtk-update-icon-cache -f -t ${DATADIR}/icons/hicolor WORKING_DIRECTORY ${CMAKE_INSTALL_PREFIX})" )
 install( FILES sample/tint2rc DESTINATION ${SYSCONFDIR}/xdg/tint2 )
 install( FILES default_icon.png DESTINATION ${DATADIR}/tint2 )
 install( FILES AUTHORS ChangeLog README.md DESTINATION ${DOCDIR} )
diff --git a/src/tint2conf/CMakeLists.txt b/src/tint2conf/CMakeLists.txt
index e8c6db38fe20..f844c24371e7 100644
--- a/src/tint2conf/CMakeLists.txt
+++ b/src/tint2conf/CMakeLists.txt
@@ -71,4 +71,3 @@ add_subdirectory(po)
 install( TARGETS tint2conf DESTINATION bin )
 install( FILES tint2conf.svg DESTINATION ${DATADIR}/icons/hicolor/scalable/apps )
 install( FILES tint2conf.desktop DESTINATION ${DATADIR}/applications )
-install( CODE "execute_process(COMMAND gtk-update-icon-cache -f -t ${DATADIR}/icons/hicolor WORKING_DIRECTORY ${CMAKE_INSTALL_PREFIX})" )