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-rw-r--r--ext/dl/extconf.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/dl/extconf.rb b/ext/dl/extconf.rb
index ef9f09438d..0eabff608d 100644
--- a/ext/dl/extconf.rb
+++ b/ext/dl/extconf.rb
@@ -7,7 +7,7 @@ end
$INSTALLFILES = [
["dl.h", "$(archdir)$(target_prefix)", ""],
]
-$distcleanfiles = "callback.h"
+$distcleanfiles << "callback.h"
check = true