diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
index 2c32049a0b..25b1478ce8 100644
--- a/cmake/CMakeLists.txt
+++ b/cmake/CMakeLists.txt
@@ -4,9 +4,9 @@
 # Set the install directory depending on the platform so it will be found by
 # find_package(GTSAMCMakeTools)
 if(WIN32 AND NOT CYGWIN)
-	set(SCRIPT_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/CMake")
+	set(SCRIPT_INSTALL_DIR "CMake")
 else()
-	set(SCRIPT_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/lib/cmake")
+	set(SCRIPT_INSTALL_DIR "lib/cmake")
 endif()
 
 # Install scripts
diff --git a/cmake/GtsamMakeConfigFile.cmake b/cmake/GtsamMakeConfigFile.cmake
index 91cb98a8c6..9a55f03c3c 100644
--- a/cmake/GtsamMakeConfigFile.cmake
+++ b/cmake/GtsamMakeConfigFile.cmake
@@ -51,7 +51,7 @@ function(GtsamMakeConfigFile PACKAGE_NAME)
 			"${PROJECT_BINARY_DIR}/${PACKAGE_NAME}Config.cmake"
 			"${PROJECT_BINARY_DIR}/${PACKAGE_NAME}ConfigVersion.cmake"
 		DESTINATION
-			"${CMAKE_INSTALL_PREFIX}/${DEF_INSTALL_CMAKE_DIR}"
+			"${DEF_INSTALL_CMAKE_DIR}"
 	)
 	install(EXPORT ${PACKAGE_NAME}-exports DESTINATION ${DEF_INSTALL_CMAKE_DIR})