1 files changed, 1 insertions, 0 deletions
diff --git a/deflateCopy.3 b/deflateCopy.3
index 1281c36..aa04e18 100644
--- a/deflateCopy.3
+++ b/deflateCopy.3
@@ -10,6 +10,7 @@
 .Lb libz
 .
 .Sh SYNOPSIS
+.In zlib.h
 .Ft int
 .Fn deflateCopy "z_streamp dest" "z_streamp source"
 .