diff --git a/indra/CMakeLists.txt b/indra/CMakeLists.txt
index 8d4969a49ea7100e8bf6e35df302d7437067cc60..d01e1869b6983dfbb1116499330bdbb783504e54 100644
--- a/indra/CMakeLists.txt
+++ b/indra/CMakeLists.txt
@@ -22,7 +22,10 @@ set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
 include(Variables)
 
 if (DARWIN)
-  cmake_minimum_required(VERSION 2.6.2 FATAL_ERROR)
+  # 2.6.4 fixes a Mac bug in get_target_property(... "SLPlugin" LOCATION):
+  # before that version it returns "pathname/SLPlugin", whereas the correct
+  # answer is "pathname/SLPlugin.app/Contents/MacOS/SLPlugin".
+  cmake_minimum_required(VERSION 2.6.4 FATAL_ERROR)
 endif (DARWIN)
 
 if (NOT CMAKE_BUILD_TYPE)