diff --git a/firefox.spec b/firefox.spec
index 6d733fe..fec1316 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -37,7 +37,6 @@ Source100:      find-external-requires
 Patch3:         firefox-1.1-nss-system-nspr.patch
 Patch4:         firefox-1.5-with-system-nss.patch
 Patch5:         firefox-1.1-visibility.patch
-Patch6:         firefox-1.5.0.1-dumpstack.patch
 
 # customization patches
 Patch20:        firefox-redhat-homepage.patch
@@ -109,7 +108,6 @@ compliance, performance and portability.
 %ifnarch i386
 %patch5  -p0
 %endif
-%patch6 -p0
 
 %patch20 -p0
 %patch21 -p1