diff --git a/pom.xml b/pom.xml
index 0fda030..4634371 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>eu.endermite</groupId>
     <artifactId>CommandWhitelist</artifactId>
-    <version>1.7.7</version>
+    <version>1.7.8</version>
     <packaging>jar</packaging>
 
     <name>CommandWhitelist</name>
diff --git a/src/main/java/eu/endermite/commandwhitelist/spigot/listeners/PlayerCommandPreProcessListener.java b/src/main/java/eu/endermite/commandwhitelist/spigot/listeners/PlayerCommandPreProcessListener.java
index 1529dc7..3a73609 100644
--- a/src/main/java/eu/endermite/commandwhitelist/spigot/listeners/PlayerCommandPreProcessListener.java
+++ b/src/main/java/eu/endermite/commandwhitelist/spigot/listeners/PlayerCommandPreProcessListener.java
@@ -27,10 +27,9 @@ public class PlayerCommandPreProcessListener implements Listener {
             for (String comm : s.getValue()) {
                 comm = comm.toLowerCase();
                 if (command.equalsIgnoreCase(comm) || command.startsWith(comm + " ")) {
-                    String rawCmd = event.getMessage();
                     List<String> bannedSubCommands = CommandsList.getSuggestions(player);
                     for (String bannedSubCommand : bannedSubCommands) {
-                        if (rawCmd.startsWith(bannedSubCommand)) {
+                        if (command.startsWith(bannedSubCommand)) {
                             event.setCancelled(true);
                             ConfigCache config = CommandWhitelist.getConfigCache();
                             player.sendMessage(ChatColor.translateAlternateColorCodes('&', config.getPrefix() + RandomStuff.getMessage(config.getCommandDeniedList(), config.getSubCommandDenied())));
diff --git a/src/main/java/eu/endermite/commandwhitelist/spigot/listeners/TabCompleteBlockerListener.java b/src/main/java/eu/endermite/commandwhitelist/spigot/listeners/TabCompleteBlockerListener.java
index 9c61816..a7dada1 100644
--- a/src/main/java/eu/endermite/commandwhitelist/spigot/listeners/TabCompleteBlockerListener.java
+++ b/src/main/java/eu/endermite/commandwhitelist/spigot/listeners/TabCompleteBlockerListener.java
@@ -14,14 +14,22 @@ public class TabCompleteBlockerListener implements Listener {
             return;
         Player player = (Player) event.getSender();
         String buffer = event.getBuffer();
-        String cmd = buffer.replace(CommandsList.getLastArgument(buffer), "");
+
         List<String> blockedCommands = CommandsList.getSuggestions(player);
         List<String> suggestions = event.getCompletions();
+
         for (String s : blockedCommands) {
             String slast = CommandsList.getLastArgument(s);
             String scommand = s.replace(slast, "");
-            cmd = cmd.replace(CommandsList.getLastArgument(cmd), "");
-            if (cmd.startsWith("/" + scommand)) {
+            String[] cmdSplit = buffer.split(" ");
+            StringBuilder cmdBuilder = new StringBuilder();
+            for (int i = 0; i <= cmdSplit.length-1; i++)
+                cmdBuilder.append(cmdSplit[i]).append(" ");
+
+            String cmd = cmdBuilder.toString();
+            if (cmd.startsWith("/"+scommand)) {
+                // This sometimes throws exceptions. No clue why, it just does. try/catch is the only fix.
+                // Probably happening when plugin adds suggestions in this event on the same priority - not confirmed.
                 try {
                     while (suggestions.contains(slast))
                         suggestions.remove(slast);