diff --git a/src/nenuscanner/templates/calibrate.html b/src/nenuscanner/templates/calibrate.html
index 60e4533..5cadf50 100644
--- a/src/nenuscanner/templates/calibrate.html
+++ b/src/nenuscanner/templates/calibrate.html
@@ -87,6 +87,10 @@
             }
 
             for (let line of value.split('\n')) {
+                if (line === "") {
+                    continue;
+                }
+
                 let { status, id, ratio } = JSON.parse(line);
                 progress = Math.ceil(1000 * parseFloat(ratio));
 
diff --git a/src/nenuscanner/templates/scan.html b/src/nenuscanner/templates/scan.html
index 8ca519e..c74a541 100644
--- a/src/nenuscanner/templates/scan.html
+++ b/src/nenuscanner/templates/scan.html
@@ -157,6 +157,10 @@
             }
 
             for (let line of value.split('\n')) {
+                if (line === "") {
+                    continue;
+                }
+
                 let { status, id, ratio } = JSON.parse(line);
                 progress = Math.ceil(1000 * parseFloat(ratio));