diff --git a/MMS24-25.c b/MMS24-25.c
index 118ec30..357f019 100644
--- a/MMS24-25.c
+++ b/MMS24-25.c
@@ -743,8 +743,8 @@ LocalExtrema *initLocalExtrema(int *piInPos, int iLen) {
 }
 
 void getMinMaxPos(double *pdIn, int iLen, int *iMinPos, int *iMaxPos) {
-    *iMaxPos = -1;
-    *iMinPos = -1;
+    *iMaxPos = 0;
+    *iMinPos = 0;
 
     if (iLen == 0) {
         _warn("getMinMaxPos: iLen is 0");