1 files changed, 0 insertions, 5 deletions
diff --git a/io.c b/io.c
index 9bce9b5315..8f8a1e9442 100644
--- a/io.c
+++ b/io.c
@@ -65,7 +65,6 @@ struct timeval {
 #endif
 
 VALUE cIO;
-extern VALUE cFile;
 VALUE eEOFError;
 VALUE eIOError;
 
@@ -2559,10 +2558,6 @@ opt_i_set(val)
     inplace = RSTRING(val)->ptr;
 }
 
-extern VALUE mKernel;
-extern VALUE mEnumerable;
-extern VALUE eStandardError;
-
 void
 Init_IO()
 {