diff --git a/Ghidra/Framework/Generic/src/main/java/ghidra/util/classfinder/ClassSearcher.java b/Ghidra/Framework/Generic/src/main/java/ghidra/util/classfinder/ClassSearcher.java
index 57500b76f0..e903b5f04a 100644
--- a/Ghidra/Framework/Generic/src/main/java/ghidra/util/classfinder/ClassSearcher.java
+++ b/Ghidra/Framework/Generic/src/main/java/ghidra/util/classfinder/ClassSearcher.java
@@ -567,8 +567,8 @@ public class ClassSearcher {
 						extensionPointSuffixes.add(line);
 					}
 					catch (PatternSyntaxException e) {
-						Msg.error(ClassSearcher.class,
-							"Skipping invalid extension point suffix '%s' found in '%s'"
+						throw new AssertException(
+							"Error parsing extension point suffix '%s' found in '%s'"
 									.formatted(line, file));
 					}
 				}