diff --git a/learn/test.cpp b/learn/test.cpp
index e877c333..356bff0a 100644
--- a/learn/test.cpp
+++ b/learn/test.cpp
@@ -13,7 +13,7 @@ constexpr static auto XMAKE = __XMAKE__;
 
 static int process_run(const char *cmd, const char *proj, const char *log) {
     static const auto exercises = fs::absolute(fs::path(XMAKE) / "exercises");
-    auto command = std::string("xmake ") + cmd + " -P " + exercises.string() + ' ' + proj;
+    auto command = std::string("xmake ") + cmd + " -P \"" + exercises.string() + "\" " + proj;
     if (log) {
         command += " >> ";
         command += log;