diff --git a/CMakeLists.txt b/CMakeLists.txt
index 27c146a9..1b99fb59 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -139,8 +139,8 @@ add_custom_target(docs doxygen)
 
 find_program(CCACHE_FOUND ccache)
 if(CCACHE_FOUND)
-    set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ccache)
-    set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK ccache)
+  set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ccache)
+  set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK ccache)
 endif(CCACHE_FOUND)
 
 # uninstall target