diff --git a/fuenfteabgabe.c b/fuenfteabgabe.c
index 37f818c..611bb96 100644
--- a/fuenfteabgabe.c
+++ b/fuenfteabgabe.c
@@ -31,7 +31,7 @@ void ustart(soli_param *sp) {
 }
 void ujeins(soli_param *sp) {
 	double jmax = sp->jmax;
-	double d = sp->n;
+	double d = sp->d;
 	double h = sp->h;
 	for (int j = 0; j <= jmax; j++) {
 		if (j == 1) {