diff --git a/src/ecopcr.c b/src/ecopcr.c
index ff2d830..4d5a700 100644
--- a/src/ecopcr.c
+++ b/src/ecopcr.c
@@ -257,7 +257,7 @@ void printRepeat(ecoseq_t *seq,
 		amplifia[amplength - o2->patlen - o1->patlen]=0;
 	else
 	{
-		delta=ldelta+rdelta+amplength;
+		delta=ldelta+rdelta+amplength-o1->patlen-o2->patlen;
 		for (i=0;i<ldelta;i++)
 			amplifia[i]|=32;
 		for (i=1;i<rdelta;i++)