diff --git a/src/gui/text/qfontsubset.cpp b/src/gui/text/qfontsubset.cpp
index fb12b681a41..d56516fa047 100644
--- a/src/gui/text/qfontsubset.cpp
+++ b/src/gui/text/qfontsubset.cpp
@@ -790,7 +790,7 @@ static void convertPath(const QPainterPath &path, QVector<TTF_POINT> *points, QV
                         // see if we can optimize out the last onCurve point
                         int mx = (points->at(points->size() - 2).x + base[2].x) >> 1;
                         int my = (points->at(points->size() - 2).y + base[2].y) >> 1;
-                        if (qAbs(mx - base[3].x) <= split_limit && qAbs(my = base[3].y) <= split_limit)
+                        if (qAbs(mx - base[3].x) <= split_limit && qAbs(my - base[3].y) <= split_limit)
                             points->takeLast();
                         try_reduce = false;
                     }