diff --git a/test/default/wasi-test-wrapper.sh b/test/default/wasi-test-wrapper.sh
index 5c3cea76..2aca3923 100755
--- a/test/default/wasi-test-wrapper.sh
+++ b/test/default/wasi-test-wrapper.sh
@@ -18,7 +18,7 @@ fi
 
 if [ -z "$WASI_RUNTIME" ] || [ "$WASI_RUNTIME" = "wasmer" ]; then
   if command -v wasmer >/dev/null; then
-    wasmer run "$1" "--${WASMER_BACKEND:-cranelift}" --dir=. && exit 0
+    wasmer run "$1" "--${WASMER_BACKEND:-cranelift}" --mapdir=./:. && exit 0
   fi
 fi