diff --git a/src/src/app/services/app.service.ts b/src/src/app/services/app.service.ts
index e947291d..fbe56ab5 100644
--- a/src/src/app/services/app.service.ts
+++ b/src/src/app/services/app.service.ts
@@ -525,6 +525,15 @@ export class AppService extends createStateService(reducer, initialState) {
           start = 1;
         }
 
+        // clamp the start to a valid range.
+        if (start < 1) {
+          start = 1;
+        }
+
+        if (start > chapters[j].vss.length) {
+          start = chapters[j].vss.length;
+        }
+
         // figure out the end verse
         if (j + 1 === chapters.length) {
           end = section.end.verse;