diff --git a/python-control.spec b/python-control.spec
index 379bb28..789779a 100644
--- a/python-control.spec
+++ b/python-control.spec
@@ -77,6 +77,7 @@ donttest="test_lti_nlsys_response"
 donttest="$donttest or test_response_plot_kwargs"
 donttest="$donttest or test_sample_system_prewarp"
 donttest="$donttest or (test_nonuniform_timepts and 4-2-3)"
+donttest="$donttest or test_linear_interconnection"
 # gh#python-control/python-control#838
 [ "${RPM_ARCH}" != "x86_64" ] && donttest="$donttest or (test_optimal_doc and shooting-3-u0-None)"
 # causes i586 segfaults in matplotlib after successful balanced model reduction tests