diff --git a/src/musredit_qt5/musrStep/PMusrStep.cpp b/src/musredit_qt5/musrStep/PMusrStep.cpp
index 249dbe98..88f92f5b 100644
--- a/src/musredit_qt5/musrStep/PMusrStep.cpp
+++ b/src/musredit_qt5/musrStep/PMusrStep.cpp
@@ -544,7 +544,7 @@ int PMusrStep::writeMsrFile()
   bool paramBlock = false;
   do {
     line = getLine(data, idx);
-    if ((idx == -1) || (idx == data.count())) {
+    if ((idx == -1) || (idx == data.size())) {
       done = true;
     } else {
       if (line.startsWith("FITPARAMETER")) {
diff --git a/src/musredit_qt6/musrStep/PMusrStep.cpp b/src/musredit_qt6/musrStep/PMusrStep.cpp
index 422dfc72..c2e6bb5a 100644
--- a/src/musredit_qt6/musrStep/PMusrStep.cpp
+++ b/src/musredit_qt6/musrStep/PMusrStep.cpp
@@ -539,7 +539,7 @@ int PMusrStep::writeMsrFile()
   bool paramBlock = false;
   do {
     line = getLine(data, idx);
-    if ((idx == -1) || (idx == data.count())) {
+    if ((idx == -1) || (idx == data.size())) {
       done = true;
     } else {
       if (line.startsWith("FITPARAMETER")) {