diff --git a/src/FbCommands.cc b/src/FbCommands.cc
index fbe41bdc..8d574565 100644
--- a/src/FbCommands.cc
+++ b/src/FbCommands.cc
@@ -131,11 +131,11 @@ void ExecuteCmd::execute() {
         displaystring += intbuff;
         setsid();
         putenv(const_cast<char *>(displaystring.c_str()));
-        execl("/bin/sh", "/bin/sh", "-c", m_cmd.c_str(), 0);
+        execl("/bin/sh", "/bin/sh", "-c", m_cmd.c_str(), static_cast<void*>(NULL));
         exit(0);
     }
 #else //   __EMX__
-    spawnlp(P_NOWAIT, "cmd.exe", "cmd.exe", "/c", m_cmd.c_str(), 0);
+    spawnlp(P_NOWAIT, "cmd.exe", "cmd.exe", "/c", m_cmd.c_str(), static_cast<void*>(NULL));
 #endif // !__EMX__
 
 }
diff --git a/util/fbrun/FbRun.cc b/util/fbrun/FbRun.cc
index da3ee6b4..118b82d6 100644
--- a/util/fbrun/FbRun.cc
+++ b/util/fbrun/FbRun.cc
@@ -117,7 +117,7 @@ void FbRun::run(const std::string &command) {
     // fork and execute program
     if (!fork()) {
         setsid();
-        execl("/bin/sh", "/bin/sh", "-c", command.c_str(), 0);
+        execl("/bin/sh", "/bin/sh", "-c", command.c_str(), static_cast<void*>(NULL));
         exit(0); //exit child
     }