diff --git a/kdesudo/main.cpp b/kdesudo/main.cpp
index 6ef0074..f48943d 100644
--- a/kdesudo/main.cpp
+++ b/kdesudo/main.cpp
@@ -37,8 +37,8 @@
 static const char *description =
 	I18N_NOOP("KdeSudo");
 // INSERT A DESCRIPTION FOR YOUR APPLICATION HERE
-	
-	
+
+
 static KCmdLineOptions options[] =
 {
 	{ "u <runas>", I18N_NOOP("sets a runas user"), 0 },
@@ -93,6 +93,10 @@ int main(int argc, char **argv)
 			executable = commandlist[0];
 		}
 	}
+	else {
+		kdError() << I18N_NOOP("You must provide the name of the executable you want to run as an argument to kdesudo") << endl;
+		exit(1);
+	}
 
 	/* We have to make sure the executable is only the binary name */
 	executableList = TQStringList::split(" ", executable);
@@ -102,7 +106,7 @@ int main(int argc, char **argv)
 	int i = executableList.count() - 1;
 	executable = executableList[i];
 
-	/* Kubuntu has a bug in it - this is a workaround for it */  
+	/* Kubuntu has a bug in it - this is a workaround for it */
 	KGlobal::dirs()->addResourceDir("apps","/usr/share/applications/kde");
 	KGlobal::dirs()->addResourceDir("apps","/usr/share/applications");