diff --git a/graphics/thumbnail.cpp b/graphics/thumbnail.cpp
index 2a2cea4e172..126a20d9f36 100644
--- a/graphics/thumbnail.cpp
+++ b/graphics/thumbnail.cpp
@@ -279,7 +279,7 @@ int *scaleLine(int size, int srcSize) {
 	int scale = 100 * size / srcSize;
 	assert(scale > 0);
 	int *v = new int[size];
-	Common::fill(v, &v[size - 1], 0);
+	Common::fill(v, v + size, 0);
 
 	int distCtr = 0;
 	int *destP = v;