diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1c14424..f2cf375 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -40,4 +40,4 @@ INSTALL(TARGETS ml
 		RUNTIME DESTINATION bin)
 
 INSTALL(DIRECTORY stdlib/ DESTINATION var/mlisp
-        FILES_MATCHING PATTERN "*.lisp")
+        FILES_MATCHING PATTERN "*.lsp")