diff --git a/firefox-esr.spec b/firefox-esr.spec
index ecfa1c4..6572c72 100644
--- a/firefox-esr.spec
+++ b/firefox-esr.spec
@@ -17,7 +17,13 @@
 #
 
 # either MozillaFirefox or firefox-esr
+%define pkgname  MozillaFirefox
+%if 0%{?suse_version} > 1549 # TW
 %define pkgname  firefox-esr
+%endif
+%if 0%{?ff_esr_name}
+%define pkgname  %{ff_esr_name}
+%endif
 
 # changed with every update
 # orig_version vs. mainver: To have beta-builds