diff --git a/src_main/system/piprocess.cpp b/src_main/system/piprocess.cpp
index 659de9c3..6d4f33c0 100755
--- a/src_main/system/piprocess.cpp
+++ b/src_main/system/piprocess.cpp
@@ -171,8 +171,15 @@ void PIProcess::startProc(bool detached) {
 #else
 
 		//cout << "exec " << tf_in << ", " << tf_out << ", " << tf_err << endl;
+		PIStringList clsl;
+		char a_ = a[0];
+		int ai_ = 0;
+		while (a_) {
+			clsl << PIString(a_);
+			a_ = a[ai_++];
+		}
 		if (execve(str.data(), a, e) < 0)
-			piCoutObj << "\"execve" << str << a << "\" error :" << errorString();
+			piCoutObj << "\"execve" << str << clsl.join(",") << "\" error :" << errorString();
 	} else {
 		msleep(1);
 		//cout << "wait" << endl;