diff --git a/libunistring.spec b/libunistring.spec
index 77e7660..275d64b 100644
--- a/libunistring.spec
+++ b/libunistring.spec
@@ -82,7 +82,7 @@ rm -f %{buildroot}/%{_libdir}/libunistring.la
 # test-malloca seem not to be suitable for ix86 obs worker
 # (locally passes, obs worker stucks -- )
 %ifarch %ix86
-sed -i 's:50000:5000:g' tests/test-malloca.c
+sed -i 's:50000:50:g' tests/test-malloca.c
 %endif
 make check %{?_smp_mflags}
 %endif