diff --git a/src/main/java/carpet/script/language/DataStructures.java b/src/main/java/carpet/script/language/DataStructures.java
index 484e33f7..42bdfdfa 100644
--- a/src/main/java/carpet/script/language/DataStructures.java
+++ b/src/main/java/carpet/script/language/DataStructures.java
@@ -17,6 +17,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
+import java.util.regex.PatternSyntaxException;
 import java.util.stream.Collectors;
 
 public class DataStructures {
@@ -55,7 +56,14 @@ public class DataStructures {
         {
             String delimiter = d.getString();
             String hwat = v.getString();
-            return ListValue.wrap(Arrays.stream(hwat.split(delimiter)).map(StringValue::new).collect(Collectors.toList()));
+            try
+            {
+                return ListValue.wrap(Arrays.stream(hwat.split(delimiter)).map(StringValue::new).collect(Collectors.toList()));
+            }
+            catch (PatternSyntaxException pse)
+            {
+                throw new InternalExpressionException("Incorrect pattern for 'split': "+pse.getMessage());
+            }
         });
 
         expression.addFunction("slice", (lv) ->
diff --git a/src/main/java/carpet/script/language/Sys.java b/src/main/java/carpet/script/language/Sys.java
index 4a9350bd..22b583a1 100644
--- a/src/main/java/carpet/script/language/Sys.java
+++ b/src/main/java/carpet/script/language/Sys.java
@@ -167,7 +167,7 @@ public class Sys {
             }
             catch (PatternSyntaxException pse)
             {
-                throw new InternalExpressionException("Incorrect pattern for replace: "+pse.getMessage());
+                throw new InternalExpressionException("Incorrect pattern for 'replace': "+pse.getMessage());
             }
         });