diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index 260eec3be..9425efd4b 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -483,7 +483,7 @@ cleanup
 cp "$CONFIG_H" "$CONFIG_BAK"
 scripts/config.pl full
 scripts/config.pl unset MBEDTLS_MEMORY_BACKTRACE # too slow for tests
-CC=clang cmake -D CMAKE_BUILD_TYPE:String=Check .
+CC=clang cmake -D CMAKE_BUILD_TYPE:String=Check -D ENABLE_TESTING=On .
 make
 
 msg "test: main suites (full config)" # ~ 5s