diff --git a/plan.fmf b/plan.fmf
index 0232733..23aff6b 100644
--- a/plan.fmf
+++ b/plan.fmf
@@ -15,13 +15,13 @@ discover:
     tests:
     - name: smoke
       path: /smoke
-      test: "VERSION=${pybasever} CYTHON=false ./venv.sh"
+      test: "VERSION=${pybasever} CYTHON=true ./venv.sh"
     - name: smoke_virtualenv
       path: /smoke
-      test: "VERSION=${pybasever} METHOD=virtualenv CYTHON=false ./venv.sh"
+      test: "VERSION=${pybasever} METHOD=virtualenv CYTHON=true ./venv.sh"
     - name: debugsmoke
       path: /smoke
-      test: "PYTHON=python${pybasever}d TOX=false VERSION=${pybasever} CYTHON=false ./venv.sh"
+      test: "PYTHON=python${pybasever}d TOX=false VERSION=${pybasever} CYTHON=true ./venv.sh"
     - name: selftest
       path: /selftest
       test: "VERSION=${pybasever} X='-i test_check_probes -i test_sysconfigdata_json' ./parallel.sh"