diff --git a/ruby.spec b/ruby.spec
index 55929d0..b799fd8 100644
--- a/ruby.spec
+++ b/ruby.spec
@@ -1002,13 +1002,6 @@ MSPECOPTS=""
 # Avoid `hostname' dependency.
 %{!?with_hostname:MSPECOPTS="-P 'Socket.gethostname returns the host name'"}
 
-%ifarch armv7hl
-# TestReadline#test_interrupt_in_other_thread fails on 32 bit arches according
-# to upstream, but the test is disabled just on Travis, not in test suite.
-# https://bugs.ruby-lang.org/issues/18393
-DISABLE_TESTS="$DISABLE_TESTS -n !/TestReadline#test_interrupt_in_other_thread/"
-%endif
-
 %ifarch i686
 # i686 specific failures.
 # https://bugs.ruby-lang.org/issues/19147