format mistake fixed
diff --git a/docs/libcurl/curl_easy_setopt.3 b/docs/libcurl/curl_easy_setopt.3
index 71d1464..4238580 100644
--- a/docs/libcurl/curl_easy_setopt.3
+++ b/docs/libcurl/curl_easy_setopt.3
@@ -485,7 +485,7 @@
and \fICURLOPT_READDATA\fP options but then you must make sure to not set
\fICURLOPT_POSTFIELDS\fP to anything but NULL. When providing data with a
callback, you must transmit it using chunked transfer-encoding or you must set
-the size of the data with the \fICURLOPT_POSTFIELDSIZE\f option.
+the size of the data with the \fICURLOPT_POSTFIELDSIZE\fP option.
You can override the default POST Content-Type: header by setting your own
with \fICURLOPT_HTTPHEADER\fP.
