diff --git a/init.rb b/init.rb
index a85474d..4b804f8 100644
--- a/init.rb
+++ b/init.rb
@@ -1,7 +1,7 @@
 def has_ueye_api?
     include_file = File.join("/usr","include","ueye.h")
     lib = File.join("/usr","lib","libueye_api.so")
-    File.exists?(include_file) && File.exists?(lib)
+    File.exist?(include_file) && File.exist?(lib)
 end
 
 def create_metapackages