diff --git a/psmisc.spec b/psmisc.spec
index 1186831..d562b15 100644
--- a/psmisc.spec
+++ b/psmisc.spec
@@ -6,7 +6,7 @@
 Summary: Utilities for managing processes on your system.
 Name: psmisc
 Version: 21.5
-Release: 3
+Release: 4
 License: BSD/GPL
 Group: Applications/System
 Source: ftp://ftp.sf.net/pub/sourceforge/psmisc/psmisc-%{version}.tar.gz
@@ -38,7 +38,7 @@ of processes that are using specified files or filesystems.
 
 %build
 
-perl -pi -e "s,^CFLAGS =,CFLAGS = $RPM_OPT_FLAGS -D_GNU_SOURCE,g" */Makefile.*
+perl -pi -e "s/^CFLAGS =/CFLAGS = $RPM_OPT_FLAGS -D_GNU_SOURCE/g" */Makefile.*
 
 # FIXME: Is --prefix actually necessary here?  I think it's redundant... test later...
 %if %{WITH_SELINUX}
@@ -78,6 +78,9 @@ rm -rf $RPM_BUILD_ROOT
 %endif
 
 %changelog
+* Sat Mar  5 2005 Karel Zak <kzak@redhat.com> 21.5-4
+- fixed problem with perl expression in the build .spec section
+
 * Sat Mar  5 2005 Karel Zak <kzak@redhat.com> 21.5-3
 - rebuilt