diff --git a/MozillaFirefox.changes b/MozillaFirefox.changes
index a9e67053..a7028122 100644
--- a/MozillaFirefox.changes
+++ b/MozillaFirefox.changes
@@ -29,6 +29,7 @@ Fri Sep 18 06:22:40 UTC 2020 - Wolfgang Rosenauer <wr@rosenauer.org>
 - skip post-build-checks for 15.0 and 15.1
 - add revert-795c8762b16b.patch to fix LTO builds with gcc
   (related to bmo#1644409)
+- require python3-curses as workaround to fix i586 build
 
 -------------------------------------------------------------------
 Thu Sep 17 11:45:31 UTC 2020 - Guillaume GARDET <guillaume.gardet@opensuse.org>
diff --git a/MozillaFirefox.spec b/MozillaFirefox.spec
index b9e07778..1ce3a5df 100644
--- a/MozillaFirefox.spec
+++ b/MozillaFirefox.spec
@@ -111,6 +111,7 @@ BuildRequires:  python36
 %else
 BuildRequires:  python2-xml
 BuildRequires:  python3 >= 3.5
+BuildRequires:  python3-curses
 %endif
 BuildRequires:  rust >= 1.43
 BuildRequires:  rust-cbindgen >= 0.14.3