diff --git a/tests/various/ezcmdline_plugin.sh b/tests/various/ezcmdline_plugin.sh
index cc1ed4bc9..58dc7d9c8 100644
--- a/tests/various/ezcmdline_plugin.sh
+++ b/tests/various/ezcmdline_plugin.sh
@@ -4,5 +4,5 @@ DIR=$(cd "$(dirname "$0")" && pwd)
 BASEDIR=$(cd "$DIR/../.." && pwd)
 rm -f "$DIR/ezcmdline_plugin.so"
 chmod +x "$DIR/ezcmdline_dummy_solver"
-"$BASEDIR/yosys-config" --build "$DIR/ezcmdline_plugin.so" "$DIR/ezcmdline_plugin.cc"
+"$BASEDIR/yosys-config" --build "$DIR/ezcmdline_plugin.so" "$DIR/ezcmdline_plugin.cc" -I"$BASEDIR"
 "$BASEDIR/yosys" -m "$DIR/ezcmdline_plugin.so" -p "ezcmdline_test -cmd $DIR/ezcmdline_dummy_solver" | grep -q "ezcmdline_test passed!"