diff --git a/app/src/main/kotlin/org/crosswire/jsword/versification/VersificationUtil.kt b/app/src/main/kotlin/org/crosswire/jsword/versification/VersificationUtil.kt
index 4b99dc9..a749bee 100644
--- a/app/src/main/kotlin/org/crosswire/jsword/versification/VersificationUtil.kt
+++ b/app/src/main/kotlin/org/crosswire/jsword/versification/VersificationUtil.kt
@@ -54,7 +54,7 @@ fun <T> Iterator<T>.iterable(): Iterable<T> {
 
 fun Versification.getBooks(): List<BibleBook> {
     return this.getBookIterator()!!.iterable()
-            .filter { VersificationUtil.INTROS.contains(it) }
+            .filter { !VersificationUtil.INTROS.contains(it) }
 }
 
 fun Versification.getBookNames(): List<String> {