diff --git a/src/main/java/ch/ethz/seb/sebserver/gui/service/examconfig/impl/rules/AllowFlashFullscreenRule.java b/src/main/java/ch/ethz/seb/sebserver/gui/service/examconfig/impl/rules/AllowFlashFullscreenRule.java
index 2df93091..73a7eb91 100644
--- a/src/main/java/ch/ethz/seb/sebserver/gui/service/examconfig/impl/rules/AllowFlashFullscreenRule.java
+++ b/src/main/java/ch/ethz/seb/sebserver/gui/service/examconfig/impl/rules/AllowFlashFullscreenRule.java
@@ -37,6 +37,10 @@ public class AllowFlashFullscreenRule implements ValueChangeRule {
             final ConfigurationAttribute attribute,
             final ConfigurationValue value) {
 
+        if (context.isReadonly()) {
+            return;
+        }
+
         if (BooleanUtils.toBoolean(value.value)) {
             context.enable(KEY_FULL_SCREEN);
         } else {
diff --git a/src/main/java/ch/ethz/seb/sebserver/gui/service/examconfig/impl/rules/BrowserWindowToolbarRule.java b/src/main/java/ch/ethz/seb/sebserver/gui/service/examconfig/impl/rules/BrowserWindowToolbarRule.java
index e8b9e90e..288a1b34 100644
--- a/src/main/java/ch/ethz/seb/sebserver/gui/service/examconfig/impl/rules/BrowserWindowToolbarRule.java
+++ b/src/main/java/ch/ethz/seb/sebserver/gui/service/examconfig/impl/rules/BrowserWindowToolbarRule.java
@@ -40,6 +40,10 @@ public class BrowserWindowToolbarRule implements ValueChangeRule {
             final ConfigurationAttribute attribute,
             final ConfigurationValue value) {
 
+        if (context.isReadonly()) {
+            return;
+        }
+
         if (BooleanUtils.toBoolean(value.value)) {
             context.enable(KEY_ADDBAR_MAIN);
             context.enable(KEY_ADDBAR);