diff --git a/build.gradle b/build.gradle
index 209fa02..1511def 100644
--- a/build.gradle
+++ b/build.gradle
@@ -27,7 +27,7 @@ dependencies {
     shadow 'org.jetbrains:annotations:16.0.2'
     shadow 'me.clip:placeholderapi:2.10.4'
     shadow 'org.xerial:sqlite-jdbc:3.23.1'
-    shadow 'org.spigotmc:spigot-api:1.15-R0.1-SNAPSHOT'
+    shadow 'org.spigotmc:spigot-api:1.15.2-R0.1-SNAPSHOT'
 }
 
 shadowJar {
diff --git a/src/main/java/dev/esophose/playerparticles/command/DefaultCommandModule.java b/src/main/java/dev/esophose/playerparticles/command/DefaultCommandModule.java
index 482a274..dd2fc98 100644
--- a/src/main/java/dev/esophose/playerparticles/command/DefaultCommandModule.java
+++ b/src/main/java/dev/esophose/playerparticles/command/DefaultCommandModule.java
@@ -18,7 +18,8 @@ public class DefaultCommandModule implements CommandModule {
         List<String> matches = new ArrayList<>();
         List<String> commandNames = PlayerParticles.getInstance().getManager(CommandManager.class).getCommandNames();
         
-        if (args.length == 0) return commandNames;
+        if (args.length == 0)
+            return commandNames;
         
         StringUtil.copyPartialMatches(args[0], commandNames, matches);
 
diff --git a/src/main/java/dev/esophose/playerparticles/command/GUICommandModule.java b/src/main/java/dev/esophose/playerparticles/command/GUICommandModule.java
index 5c4dd23..d7508aa 100644
--- a/src/main/java/dev/esophose/playerparticles/command/GUICommandModule.java
+++ b/src/main/java/dev/esophose/playerparticles/command/GUICommandModule.java
@@ -35,7 +35,8 @@ public class GUICommandModule implements CommandModule {
             return;
         }
 
-        if (!Setting.GUI_PRESETS_ONLY.getBoolean() && (permissionManager.getEffectsUserHasPermissionFor(pplayer).isEmpty() || permissionManager.getStylesUserHasPermissionFor(pplayer).isEmpty())) {
+        boolean hasEffectsAndStyles = permissionManager.getEffectsUserHasPermissionFor(pplayer).isEmpty() || permissionManager.getStylesUserHasPermissionFor(pplayer).isEmpty();
+        if (!Setting.GUI_PRESETS_ONLY.getBoolean() && (Setting.GUI_REQUIRE_EFFECTS_AND_STYLES.getBoolean() && !hasEffectsAndStyles)) {
             if (byDefault) {
                 localeManager.sendMessage(pplayer, "command-error-missing-effects-or-styles");
             } else {
diff --git a/src/main/java/dev/esophose/playerparticles/gui/GuiInventoryEditEffect.java b/src/main/java/dev/esophose/playerparticles/gui/GuiInventoryEditEffect.java
index d355041..301e66a 100644
--- a/src/main/java/dev/esophose/playerparticles/gui/GuiInventoryEditEffect.java
+++ b/src/main/java/dev/esophose/playerparticles/gui/GuiInventoryEditEffect.java
@@ -27,7 +27,7 @@ public class GuiInventoryEditEffect extends GuiInventory {
         List<ParticleEffect> effectsUserHasPermissionFor = PlayerParticles.getInstance().getManager(PermissionManager.class).getEffectsUserHasPermissionFor(pplayer);
         int numberOfItems = effectsUserHasPermissionFor.size();
         int itemsPerPage = 28;
-        int maxPages = (int) Math.ceil((double) numberOfItems / itemsPerPage);
+        int maxPages = (int) Math.max(1, Math.ceil((double) numberOfItems / itemsPerPage));
         int slot = 10;
         int nextWrap = 17;
         int maxSlot = 43;
diff --git a/src/main/java/dev/esophose/playerparticles/gui/GuiInventoryEditStyle.java b/src/main/java/dev/esophose/playerparticles/gui/GuiInventoryEditStyle.java
index 1b4b498..8347801 100644
--- a/src/main/java/dev/esophose/playerparticles/gui/GuiInventoryEditStyle.java
+++ b/src/main/java/dev/esophose/playerparticles/gui/GuiInventoryEditStyle.java
@@ -27,7 +27,7 @@ public class GuiInventoryEditStyle extends GuiInventory {
         List<ParticleStyle> stylesUserHasPermissionFor = PlayerParticles.getInstance().getManager(PermissionManager.class).getStylesUserHasPermissionFor(pplayer);
         int numberOfItems = stylesUserHasPermissionFor.size();
         int itemsPerPage = 28;
-        int maxPages = (int) Math.ceil((double) numberOfItems / itemsPerPage);
+        int maxPages = (int) Math.max(1, Math.ceil((double) numberOfItems / itemsPerPage));
         int slot = 10;
         int nextWrap = 17;
         int maxSlot = 43;
diff --git a/src/main/java/dev/esophose/playerparticles/manager/ConfigurationManager.java b/src/main/java/dev/esophose/playerparticles/manager/ConfigurationManager.java
index 06be3dd..eb9200b 100644
--- a/src/main/java/dev/esophose/playerparticles/manager/ConfigurationManager.java
+++ b/src/main/java/dev/esophose/playerparticles/manager/ConfigurationManager.java
@@ -37,6 +37,7 @@ public class ConfigurationManager extends Manager {
         USE_MESSAGE_PREFIX("use-message-prefix", true, "Whether or not to use the message-prefix field when displaying messages"),
         GUI_ENABLED("gui-enabled", true, "If the command /pp gui is enabled", "Disable this if you have your own custom GUI through another plugin"),
         GUI_REQUIRE_PERMISSION("gui-require-permission", false, "If the GUI should require the permission playerparticles.gui to open"),
+        GUI_REQUIRE_EFFECTS_AND_STYLES("gui-require-effects-and-styles", true, "If the GUI should require the player to have permission for at least", "one effect and one style to be able to open the GUI"),
         GUI_PRESETS_ONLY("gui-presets-only", false, "If true, only the preset groups will be available in the GUI", "Permissions to open the GUI will change to only open if the user has any preset groups available"),
         GUI_CLOSE_AFTER_GROUP_SELECTED("gui-close-after-group-selected", true, "If true, the GUI will close after selecting a group (either saved or preset)"),
         GUI_BUTTON_SOUND("gui-button-sound", true, "If clicking a GUI button should make a noise"),