diff --git a/dsniff.spec b/dsniff.spec
index 73949a6..9c7cfa3 100644
--- a/dsniff.spec
+++ b/dsniff.spec
@@ -26,7 +26,7 @@ Patch16:	dsniff-2.4-checksum_libnids.patch
 Patch17:	dsniff-2.4-fedora_dirs.patch
 Patch18:	dsniff-2.4-glib2.patch
 BuildRequires:	libnet-devel, openssl-devel, libnids-devel
-BuildRequires:	glib2-devel, db4-devel, libcap-devel
+BuildRequires:	glib2-devel, db4-devel, %{_includedir}/pcap.h
 BuildRoot:	%{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 %description
@@ -50,7 +50,9 @@ by exploiting weak bindings in ad-hoc PKI.
 %patch7 -p1 -b .checksum
 %patch8 -p1 -b .openssl_098
 %patch9 -p1 -b .sshcrypto
+%if 0%{?rhel}%{?fedora} >= 5
 %patch10 -p1 -b .sysconf_clocks
+%endif
 %patch11 -p1 -b .urlsnarf_escape
 %patch12 -p1 -b .string_header
 %patch13 -p1 -b .arpa_inet_header