diff --git a/cmakescripts/BuildPackages.cmake b/cmakescripts/BuildPackages.cmake
index a647c672..ee5011ea 100644
--- a/cmakescripts/BuildPackages.cmake
+++ b/cmakescripts/BuildPackages.cmake
@@ -92,7 +92,7 @@ else()
   set(INST_DEFS ${INST_DEFS} "-DBUILDDIR=")
 endif()
 
-STRING(REGEX REPLACE "/" "\\\\" INST_DIR ${CMAKE_INSTALL_PREFIX})
+string(REGEX REPLACE "/" "\\\\" INST_DIR ${CMAKE_INSTALL_PREFIX})
 
 configure_file(release/installer.nsi.in installer.nsi @ONLY)