1 files changed, 1 insertions, 1 deletions
diff --git a/tests/fasta.cpp b/tests/fasta.cpp
index 35bd4425..1b52e1b2 100644
--- a/tests/fasta.cpp
+++ b/tests/fasta.cpp
@@ -54,7 +54,7 @@ struct Cumulative {
       }
 
       for ( unsigned int i = 0; i <= slots; i++ ) {
-         while ( i > start->pi ) {
+         while ( i > start->pi && start->pi != 0) {
             ++start;
           }